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2b5i

cytokine receptor complex

Method: X-RAY DIFFRACTION Dmax: 101.0 Å Quality: EXCELLENT
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Interleukin-2

Homo sapiens

UniProt P60568

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 4 其他Polymer 2 PDB declaration: tetrameric（4） Consistent with protein copy count Chain A； UniProt 21–153 Not recorded Interleukin-2 receptor beta chain × 1 （P14784） Cytokine receptor common gamma chain × 1 （P31785） Interleukin-2 receptor alpha chain × 1 （P01589） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 6.1；293 K；29% Pentaerythritol Ethoxylate 15/4; 50 mM Ammonium Sulfate; 50 mM Bis Tris, pH 6.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.30 Å R-free 0.269

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 2B5I Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1IRL THE SOLUTION STRUCTURE OF THE F42A MUTANT OF HUMAN INTERLEUKIN 2 Deposited 1995-08-25 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：F42A No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1M47 Crystal Structure of Human Interleukin-2 Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.99 Å R-free 0.245
1M48 Crystal Structure of Human IL-2 Complexed with (R)-N-[2-[1-(Aminoiminomethyl)-3-piperidinyl]-1-oxoethyl]-4-(phenylethynyl)-L-phenylalanine methyl ester Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Not recorded FRG 2-[3-METHYL-4-(N-METHYL-GUANIDINO)-BUTYRYLAMINO]-3-(4-PHENYLETHYNYL-PHENYL)-PROPIONIC ACID METHYL ESTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.95 Å R-free 0.269
1M48 Crystal Structure of Human IL-2 Complexed with (R)-N-[2-[1-(Aminoiminomethyl)-3-piperidinyl]-1-oxoethyl]-4-(phenylethynyl)-L-phenylalanine methyl ester Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Not recorded FRG 2-[3-METHYL-4-(N-METHYL-GUANIDINO)-BUTYRYLAMINO]-3-(4-PHENYLETHYNYL-PHENYL)-PROPIONIC ACID METHYL ESTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.95 Å R-free 0.269
1M49 Crystal Structure of Human Interleukin-2 Complexed with SP-1985 Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Not recorded CMM 2-[2-(1-CARBAMIMIDOYL-PIPERIDIN-3-YL)-ACETYLAMINO]-3-{4-[2-(3-OXALYL-1H-INDOL-7-YL)ETHYL]-PHENYL}-PROPIONIC ACID METHYL ESTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.278
1M49 Crystal Structure of Human Interleukin-2 Complexed with SP-1985 Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Not recorded CMM 2-[2-(1-CARBAMIMIDOYL-PIPERIDIN-3-YL)-ACETYLAMINO]-3-{4-[2-(3-OXALYL-1H-INDOL-7-YL)ETHYL]-PHENYL}-PROPIONIC ACID METHYL ESTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.278
1M4A Crystal Structure of Human Interleukin-2 Y31C Covalently Modified at C31 with (1H-Indol-3-yl)-(2-mercapto-ethoxyimino)-acetic acid Deposited 2002-07-02 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：Y31C MPE (1H-INDOL-3-YL)-(2-MERCAPTO-ETHOXYIMINO)-ACETIC ACID × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.18 Å R-free 0.324
1M4B Crystal Structure of Human Interleukin-2 K43C Covalently Modified at C43 with 2-[2-(2-Cyclohexyl-2-guanidino-acetylamino)-acetylamino]-N-(3-mercapto-propyl)-propionamide Deposited 2002-07-02 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：K43C NMP 2-[2-(2-CYCLOHEXYL-2-GUANIDINO-ACETYLAMINO)-ACETYLAMINO]-N-(3-MERCAPTO-PROPYL)-PROPIONAMIDE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.15 Å R-free 0.286
1M4C Crystal Structure of Human Interleukin-2 Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.40 Å R-free 0.333
1M4C Crystal Structure of Human Interleukin-2 Deposited 2002-07-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.40 Å R-free 0.333
1NBP Crystal Structure Of Human Interleukin-2 Y31C Covalently Modified At C31 With 3-Mercapto-1-(1,3,4,9-tetrahydro-B-carbolin-2-yl)-propan-1-one Deposited 2002-12-03 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：Y31C SO4 SULFATE ION × 1 MHC 3-MERCAPTO-1-(1,3,4,9-TETRAHYDRO-B-CARBOLIN-2-YL)-PROPAN-1-ONE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；ammonium sulfate, PEG 8k, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.20 Å R-free 0.277
1PW6 Low Micromolar Small Molecule Inhibitor of IL-2 Deposited 2003-06-30 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Not recorded SO4 SULFATE ION × 1 FRB 2-CYCLOHEXYL-N-(2-{4-[5-(2,3-DICHLORO-PHENYL)-2H-PYRAZOL-3-YL]-PIPERIDIN-1-YL}-2-OXO-ETHYL)-2-GUANIDINO-ACETAMIDE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；lithium sulfate, ammonium sulfate, pH 5.9, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.292
1PW6 Low Micromolar Small Molecule Inhibitor of IL-2 Deposited 2003-06-30 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Not recorded FRB 2-CYCLOHEXYL-N-(2-{4-[5-(2,3-DICHLORO-PHENYL)-2H-PYRAZOL-3-YL]-PIPERIDIN-1-YL}-2-OXO-ETHYL)-2-GUANIDINO-ACETAMIDE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；lithium sulfate, ammonium sulfate, pH 5.9, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.292
1PW6 Low Micromolar Small Molecule Inhibitor of IL-2 Deposited 2003-06-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric
Chain A 21–153（133 aa）
Chain B 21–153（133 aa）
Not recorded SO4 SULFATE ION × 2 FRB 2-CYCLOHEXYL-N-(2-{4-[5-(2,3-DICHLORO-PHENYL)-2H-PYRAZOL-3-YL]-PIPERIDIN-1-YL}-2-OXO-ETHYL)-2-GUANIDINO-ACETAMIDE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；lithium sulfate, ammonium sulfate, pH 5.9, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.292
1PW6 Low Micromolar Small Molecule Inhibitor of IL-2 Deposited 2003-06-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 21–153（133 aa）
Chain B 21–153（133 aa）
Not recorded SO4 SULFATE ION × 1 FRB 2-CYCLOHEXYL-N-(2-{4-[5-(2,3-DICHLORO-PHENYL)-2H-PYRAZOL-3-YL]-PIPERIDIN-1-YL}-2-OXO-ETHYL)-2-GUANIDINO-ACETAMIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；lithium sulfate, ammonium sulfate, pH 5.9, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.292
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain C 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain D 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 5 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain C 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1PY2 Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 Deposited 2003-07-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 6 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–152（132 aa）
Not recorded FRH 5-[2,3-DICHLORO-4-(5-{1-[2-(2-GUANIDINO-4-METHYL-PENTANOYLAMINO)-ACETYL]-PIPERIDIN-4-YL}-1-METHYL-1H-PYRAZOL-3-YL)-PHENOXYMETHYL]-FURAN-2-CARBOXYLIC ACID × 1 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.320
1QVN Structure of SP4160 Bound to IL-2 V69A Deposited 2003-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 21–152（132 aa）
Chain C 21–152（132 aa）
Mutation：V69A Mutation：V69A ZN ZINC ION × 2 FRI 2-GUANIDINO-4-METHYL-PENTANOIC ACID [2-(4-{5-[4-(4-ACETYLAMINO-BENZYLOXY)-2,3-DICHLORO-PHENYL]-2-METHYL-2H-PYRAZOL-3-YL}-PIPERIDIN-1-YL)-2-OXO-ETHYL]-AMIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.308
1QVN Structure of SP4160 Bound to IL-2 V69A Deposited 2003-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain B 21–152（132 aa）
Chain D 21–152（132 aa）
Mutation：V69A Mutation：V69A ZN ZINC ION × 2 FRI 2-GUANIDINO-4-METHYL-PENTANOIC ACID [2-(4-{5-[4-(4-ACETYLAMINO-BENZYLOXY)-2,3-DICHLORO-PHENYL]-2-METHYL-2H-PYRAZOL-3-YL}-PIPERIDIN-1-YL)-2-OXO-ETHYL]-AMIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.308
1QVN Structure of SP4160 Bound to IL-2 V69A Deposited 2003-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric
Chain A 21–152（132 aa）
Chain B 21–152（132 aa）
Chain C 21–152（132 aa）
Chain D 21–152（132 aa）
Mutation：V69A Mutation：V69A Mutation：V69A Mutation：V69A ZN ZINC ION × 4 FRI 2-GUANIDINO-4-METHYL-PENTANOIC ACID [2-(4-{5-[4-(4-ACETYLAMINO-BENZYLOXY)-2,3-DICHLORO-PHENYL]-2-METHYL-2H-PYRAZOL-3-YL}-PIPERIDIN-1-YL)-2-OXO-ETHYL]-AMIDE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.308
1QVN Structure of SP4160 Bound to IL-2 V69A Deposited 2003-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 21–152（132 aa）
Chain C 21–152（132 aa）
Mutation：V69A Mutation：V69A ZN ZINC ION × 2 FRI 2-GUANIDINO-4-METHYL-PENTANOIC ACID [2-(4-{5-[4-(4-ACETYLAMINO-BENZYLOXY)-2,3-DICHLORO-PHENYL]-2-METHYL-2H-PYRAZOL-3-YL}-PIPERIDIN-1-YL)-2-OXO-ETHYL]-AMIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.9；298 K；0.05 M Zinc Acetate, 0.075 M Magnesium Chloride, 18% (w/v) Polyethylene Glycol 10K, 0.1M Sodium Cacodylate, pH 5.9. , VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.308
1Z92 structure of interleukin-2 with its alpha receptor Deposited 2005-03-31 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain A 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；Na-malonic acid, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain D 21–153（133 aa）
Mutation：C125A NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain H 21–153（133 aa）
Mutation：C125A NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
3INK UNRAVELING THE STRUCTURE OF INTERLEUKIN-2: REPLY Deposited 1992-12-09 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain C 21–153（133 aa）
Chain D 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain A 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 10 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain b 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 11 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain e 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 12 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain h 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain D 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain G 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain J 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 5 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain M 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 6 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain P 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 7 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain S 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 8 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain V 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 9 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain Y 21–153（133 aa） Fragment：unp residues 21-153
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain C 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain D 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 5 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain E 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 6 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain F 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 7 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain G 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
3QB1 Interleukin-2 mutant D10 Deposited 2011-01-12 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 8 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain H 21–153（133 aa）
Mutation：Q74H, L80F, R81D, L85V, I86V, I92F No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；298 K；50 mM HEPES, 200 mM NaCl, 30% PEG-4000, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.10 Å R-free 0.263
5LQB Complex structure of human IL2 mutant, Proleukin, with Fab fragment of NARA1 antibody Deposited 2016-08-16 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain A 22–153（132 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20% PEG3350 0.2M Sodium Nitrate
Resolution 1.95 Å R-free 0.291
5UTZ Human IL-2/Fab complex Deposited 2017-02-15 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain D 21–153（133 aa）
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；295 K；100 mM sodium citrate, pH 5.0, 20% PEG6000
Resolution 2.75 Å R-free 0.247
5UTZ Human IL-2/Fab complex Deposited 2017-02-15 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain A 21–153（133 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；295 K；100 mM sodium citrate, pH 5.0, 20% PEG6000
Resolution 2.75 Å R-free 0.247
5UTZ Human IL-2/Fab complex Deposited 2017-02-15 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain E 21–153（133 aa）
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；295 K；100 mM sodium citrate, pH 5.0, 20% PEG6000
Resolution 2.75 Å R-free 0.247
5UTZ Human IL-2/Fab complex Deposited 2017-02-15 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 21–153（133 aa）
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；295 K；100 mM sodium citrate, pH 5.0, 20% PEG6000
Resolution 2.75 Å R-free 0.247
6LX3 Cryo-EM structure of human secretory immunoglobulin A Deposited 2020-02-10 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 1–21（21 aa）
Chain B 1–21（21 aa）
Chain C 1–21（21 aa）
Chain D 1–21（21 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.15 Å
6LXW Cryo-EM structure of human secretory immunoglobulin A in complex with the N-terminal domain of SpsA Deposited 2020-02-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 7 PDB declaration: heptameric
Chain A 1–21（21 aa）
Chain B 1–21（21 aa）
Chain C 1–21（21 aa）
Chain D 1–21（21 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.27 Å
6VWU X-ray structure of ALKS 4230, a fusion of circularly permuted human Interleukin-2 and Interleukin-2 Receptor alpha Deposited 2020-02-20 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric
Chain A 24–94（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；An equal volume of protein was mixed with crystallization buffer, 25 % (w/v) PEG 3350, 0.2 M MgCl2, 0.1 M Hepes 7.5. Large crystals appeared within 48-72 hours, and were frozen in a cryoprotectant consisting of mother liquor with 10 % glycerol
Resolution 3.40 Å R-free 0.297
6YE3 IL-2 in complex with a Fab fragment from UFKA-20 Deposited 2020-03-23 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；10.86% (v/v) PEG 8000, 5.76% (v/v) ethylene glycol, 100 mM HEPES, pH 7.48
Resolution 2.89 Å R-free 0.283
6YE3 IL-2 in complex with a Fab fragment from UFKA-20 Deposited 2020-03-23 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain F 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；10.86% (v/v) PEG 8000, 5.76% (v/v) ethylene glycol, 100 mM HEPES, pH 7.48
Resolution 2.89 Å R-free 0.283
6YE3 IL-2 in complex with a Fab fragment from UFKA-20 Deposited 2020-03-23 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；10.86% (v/v) PEG 8000, 5.76% (v/v) ethylene glycol, 100 mM HEPES, pH 7.48
Resolution 2.89 Å R-free 0.283
7DR4 Complex of anti-human IL-2 antibody and human IL-2 Deposited 2020-12-25 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain K 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M NH4NO3, pH4.8, 25% PEG3350
Resolution 2.49 Å R-free 0.258
7DR4 Complex of anti-human IL-2 antibody and human IL-2 Deposited 2020-12-25 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain J 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M NH4NO3, pH4.8, 25% PEG3350
Resolution 2.49 Å R-free 0.258
7DR4 Complex of anti-human IL-2 antibody and human IL-2 Deposited 2020-12-25 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain G 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M NH4NO3, pH4.8, 25% PEG3350
Resolution 2.49 Å R-free 0.258
7DR4 Complex of anti-human IL-2 antibody and human IL-2 Deposited 2020-12-25 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 21–153（133 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M NH4NO3, pH4.8, 25% PEG3350
Resolution 2.49 Å R-free 0.258
7M2G INTERLEUKIN-2 (human) mutant P65K, C125S Deposited 2021-03-16 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa） Fragment：IL2
Mutation：P65K, C125S SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 7.75；293 K；1.75M (NH4)2SO4, 0.10 M HEPES/NaOH pH=7.75 at a protein concentration of 37 mg/ml.
Resolution 1.79 Å R-free 0.228
7RA9 Designed StabIL-2 seq1 Deposited 2021-06-30 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：G27M, I28L, K32D, M39L, E52S, V69A, L72A, Q74G, S75D, K76D, N77P, F78K, H79T, L80I, delta81-82, L85V, I86V, I92F, V115I PO4 PHOSPHATE ION × 3 EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 10.5；295 K；0.2 M Li2SO4, 0.1 M CAPS pH 10.5, 1.2 M NaH2PO4, and 0.8 M K2HPO4
Resolution 2.20 Å R-free 0.293
7RAA Designed StabIL-2 seq15 Deposited 2021-06-30 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–153（133 aa）
Mutation：G27M, I28L, K32D, V69A, L72Q, R81D, V115I MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.3；295 K；0.2 M MgCl2, 0.1 M Tris pH 8.3, 24% PEG 3350 with microseeding
Resolution 2.69 Å R-free 0.294
7RAA Designed StabIL-2 seq15 Deposited 2021-06-30 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 21–153（133 aa）
Mutation：G27M, I28L, K32D, V69A, L72Q, R81D, V115I MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.3；295 K；0.2 M MgCl2, 0.1 M Tris pH 8.3, 24% PEG 3350 with microseeding
Resolution 2.69 Å R-free 0.294
7RAA Designed StabIL-2 seq15 Deposited 2021-06-30 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain C 21–153（133 aa）
Mutation：G27M, I28L, K32D, V69A, L72Q, R81D, V115I No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.3；295 K；0.2 M MgCl2, 0.1 M Tris pH 8.3, 24% PEG 3350 with microseeding
Resolution 2.69 Å R-free 0.294
7RAA Designed StabIL-2 seq15 Deposited 2021-06-30 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain D 21–153（133 aa）
Mutation：G27M, I28L, K32D, V69A, L72Q, R81D, V115I No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.3；295 K；0.2 M MgCl2, 0.1 M Tris pH 8.3, 24% PEG 3350 with microseeding
Resolution 2.69 Å R-free 0.294
7ZMZ Engineered Interleukin 2 bound to CD25 receptor Deposited 2022-04-20 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain A 20–153（134 aa）
Mutation：T37H, R38L, T41S, F42Y, K43G No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；19% PEG 3350, 0.2 M Sodium tartrate dibasic dihydrate, 10% glycerol
Resolution 3.20 Å R-free 0.258
8SOW Structure of the complex formed by human interleukin-2 and scFv F10 Deposited 2023-04-30 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain A 20–153（134 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；15-30% PEG 3350, 0.1-0.35 M ammonium fluoride
Resolution 1.71 Å R-free 0.235
8SOZ Structure of the complex formed by human interleukin-2 and scFv 602 Deposited 2023-04-30 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain A 20–153（134 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；15-30% PEG 3350, 0.1-0.35 ammonium fluoride
Resolution 1.64 Å R-free 0.250
8WYR Cryo-EM structure of human CD5L bound to IgM-Fc/J Deposited 2023-10-31 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 12 PDB declaration: dodecameric
Chain A 1–21（21 aa）
Chain B 1–21（21 aa）
Chain C 1–21（21 aa）
Chain D 1–21（21 aa）
Chain E 1–21（21 aa）
Chain F 1–21（21 aa）
Chain G 1–21（21 aa）
Chain H 1–21（21 aa）
Chain K 1–21（21 aa）
Chain L 1–21（21 aa）
Chain M 1–21（21 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 10 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.39 Å
8WYS Local map of human CD5L bound to IgM-Fc/J Deposited 2023-10-31 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 1–21（21 aa）
Chain L 1–21（21 aa）
Chain M 1–21（21 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 CA CALCIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.41 Å
9KMC Cryo-EM structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 and anti-CD25 Fab S417 Deposited 2024-11-15 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain D 21–153（133 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å
9MBZ Cryo-EM structure of human FcRL4 bound to IgA-Fc/J Deposited 2025-03-17 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 1–21（21 aa）
Chain B 1–21（21 aa）
Chain C 1–21（21 aa）
Chain D 1–21（21 aa）
Chain F 1–21（21 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 3.30 Å

33 other PDB entries and 77 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IL2_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–133； UniProt 21–153

Interleukin-2 receptor beta chain

Homo sapiens

UniProt P14784

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 4 其他Polymer 2 PDB declaration: tetrameric（4） Consistent with protein copy count Chain B； UniProt 27–240 Mutation：N3Q,N17Q,N45Q Interleukin-2 × 1 （P60568） Cytokine receptor common gamma chain × 1 （P31785） Interleukin-2 receptor alpha chain × 1 （P01589） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 6.1；293 K；29% Pentaerythritol Ethoxylate 15/4; 50 mM Ammonium Sulfate; 50 mM Bis Tris, pH 6.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.30 Å R-free 0.269

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 2B5I Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 25–230（206 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain F 25–230（206 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain B 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 10 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain c 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 11 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain f 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 12 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain i 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain E 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain H 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain K 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 5 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain N 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 6 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain Q 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 7 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain T 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 8 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain W 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 9 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain Z 24–240（217 aa） Fragment：unp residues 24-240
Mutation：N29Q, N43Q, N71Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
4GS7 Structure of the Interleukin-15 quaternary complex Deposited 2012-08-27 Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 27–240（214 aa）
Mutation：N29Q, N43Q, N71Q Non-standard monomer：Yes (specific site not provided by mmCIF) EDO 1,2-ETHANEDIOL × 1 ACT ACETATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.75；298 K；22.5% PEG3350, 0.1M BIS-TRIS propane, 0.2M sodium acetate, pH 8.75, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.35 Å R-free 0.227
5M5E Crystal structure of a interleukin-2 variant in complex with interleukin-2 receptor Deposited 2016-10-21 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain B 27–240（214 aa）
Not recorded MAN alpha-D-mannopyranose × 1 SO4 SULFATE ION × 4 CYS CYSTEINE × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；0.1M HEPES, pH 7.0, 2M ammonium sulfate
Resolution 2.30 Å R-free 0.235
6E8K Legionella Longbeachae LeSH (Llo2327) bound to the human interleukin-2 receptor beta pTyr387 peptide Deposited 2018-07-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain B 381–393（13 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296 K；PEG3000, sodium malonate
Resolution 1.71 Å R-free 0.211
7S2S nanobody bound to Interleukin-2Rbeta Deposited 2021-09-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric
Chain B 27–236（210 aa） Fragment：extracellular domain
Non-standard monomer：Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；295 K；0.23 M ammonium sulfate, 0.08 M Bis Tris pH 5.5, 23% PEG 3350
Resolution 1.93 Å R-free 0.247
7S2S nanobody bound to Interleukin-2Rbeta Deposited 2021-09-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 27–236（210 aa） Fragment：extracellular domain
Non-standard monomer：Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 9 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；295 K；0.23 M ammonium sulfate, 0.08 M Bis Tris pH 5.5, 23% PEG 3350
Resolution 1.93 Å R-free 0.247
9KMC Cryo-EM structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 and anti-CD25 Fab S417 Deposited 2024-11-15 Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain B 27–240（214 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å

7 other PDB entries and 20 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IL2RB_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–214； UniProt 27–240

Cytokine receptor common gamma chain

Homo sapiens

UniProt P31785

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 4 其他Polymer 2 PDB declaration: tetrameric（4） Consistent with protein copy count Chain C； UniProt 56–254 Mutation：N53Q Interleukin-2 × 1 （P60568） Interleukin-2 receptor beta chain × 1 （P14784） Interleukin-2 receptor alpha chain × 1 （P01589） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 6.1；293 K；29% Pentaerythritol Ethoxylate 15/4; 50 mM Ammonium Sulfate; 50 mM Bis Tris, pH 6.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.30 Å R-free 0.269

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 2B5I Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 23–255（233 aa）
Mutation：N58Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain G 23–255（233 aa）
Mutation：N58Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
3BPL Crystal structure of the IL4-IL4R-Common Gamma ternary complex Deposited 2007-12-18 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 56–254（199 aa） Fragment：Extracellular domain, residues 56-254
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；295 K；10% PEG8K, 8% ethylene glycol, 0.1M HEPES pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 2.93 Å R-free 0.297
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 10 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain d 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 11 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain g 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 12 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain j 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain F 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain L 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 5 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain O 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 6 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain R 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 7 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain U 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 8 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain X 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QAZ IL-2 mutant D10 ternary complex Deposited 2011-01-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 9 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain a 56–254（199 aa） Fragment：unp residues 56-254
Mutation：N75Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；100 mM Bis-Tris, 200 mM NH4SO4, 25% PEG-3350, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.80 Å R-free 0.344
3QB7 Interleukin-4 mutant RGA bound to cytokine receptor common gamma Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 55–254（200 aa） Fragment：UNP residues 55-254
Mutation：N53Q SO4 SULFATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.3；298 K；100 mM (NH4)2SO4, 100 mM Cacodylate, 20% PEG-3350, pH 6.3, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.25 Å R-free 0.292
3QB7 Interleukin-4 mutant RGA bound to cytokine receptor common gamma Deposited 2011-01-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric
Chain C 55–254（200 aa） Fragment：UNP residues 55-254
Mutation：N53Q SO4 SULFATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.3；298 K；100 mM (NH4)2SO4, 100 mM Cacodylate, 20% PEG-3350, pH 6.3, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.25 Å R-free 0.292
4GS7 Structure of the Interleukin-15 quaternary complex Deposited 2012-08-27 Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 55–254（200 aa）
Mutation：N75Q Non-standard monomer：Yes (specific site not provided by mmCIF) EDO 1,2-ETHANEDIOL × 1 ACT ACETATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.75；298 K；22.5% PEG3350, 0.1M BIS-TRIS propane, 0.2M sodium acetate, pH 8.75, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.35 Å R-free 0.227
5M5E Crystal structure of a interleukin-2 variant in complex with interleukin-2 receptor Deposited 2016-10-21 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 23–262（240 aa）
Not recorded MAN alpha-D-mannopyranose × 1 SO4 SULFATE ION × 4 CYS CYSTEINE × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；0.1M HEPES, pH 7.0, 2M ammonium sulfate
Resolution 2.30 Å R-free 0.235
6OEL Engineered Fab bound to IL-4 receptor Deposited 2019-03-27 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric
Chain C 61–249（189 aa） Fragment：UNP residues 61-249
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 NO3 NITRATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；295 K；22.5% PurePEG (Microlytic), 0.1 M sodium citrate, pH 5.5, 0.6 M ammonium nitrate
Resolution 3.10 Å R-free 0.256
7S2R nanobody bound to IL-2Rg Deposited 2021-09-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric
Chain A 55–254（200 aa） Fragment：extracellular domain
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SO4 SULFATE ION × 8 GOL GLYCEROL × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；295 K；2M ammonium sulfate, 0.2M BIS-Tris pH5.5
Resolution 2.49 Å R-free 0.271
8ENT Interleukin-21 signaling complex with IL-21R and IL-2Rg Deposited 2022-09-30 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 55–254（200 aa）
Mutation：N53Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1M Tris pH 8, 20% PEG 6000
Resolution 2.83 Å R-free 0.300
8ENT Interleukin-21 signaling complex with IL-21R and IL-2Rg Deposited 2022-09-30 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain F 55–254（200 aa）
Mutation：N53Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 EDO 1,2-ETHANEDIOL × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1M Tris pH 8, 20% PEG 6000
Resolution 2.83 Å R-free 0.300
8ENT Interleukin-21 signaling complex with IL-21R and IL-2Rg Deposited 2022-09-30 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 55–254（200 aa）
Mutation：N53Q NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；295 K；0.1M Tris pH 8, 20% PEG 6000
Resolution 2.83 Å R-free 0.300
8EPA Structure of interleukin receptor common gamma chain (IL2Rgamma) in complex with two antibodies Deposited 2022-10-05 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric
Chain I 23–262（240 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
9E2T Structure of a de novo designed interleukin-21 mimetic complex with IL-21R and IL-2Rg Deposited 2024-10-22 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain C 55–254（200 aa） Fragment：residues 55-254
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；0.2M Potassium thiocyanate, 0.1M Bis-Tris propane, pH 6.5, 20% w/v PEG 3350
Resolution 2.28 Å R-free 0.242
9E2T Structure of a de novo designed interleukin-21 mimetic complex with IL-21R and IL-2Rg Deposited 2024-10-22 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain F 55–254（200 aa） Fragment：residues 55-254
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；0.2M Potassium thiocyanate, 0.1M Bis-Tris propane, pH 6.5, 20% w/v PEG 3350
Resolution 2.28 Å R-free 0.242
9JQT Structure of interleukin receptor common gamma chain (IL2Rgamma/CD132) in complex with 2D4 Deposited 2024-09-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 23–262（240 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
9KMC Cryo-EM structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 and anti-CD25 Fab S417 Deposited 2024-11-15 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain C 23–255（233 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å

13 other PDB entries and 29 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IL2RG_HUMAN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C； PDBConstruct 1–199； UniProt 56–254

Interleukin-2 receptor alpha chain

Homo sapiens

UniProt P01589

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 4 其他Polymer 2 PDB declaration: tetrameric（4） Consistent with protein copy count Chain D； UniProt 22–238 Mutation：N68Q Interleukin-2 × 1 （P60568） Interleukin-2 receptor beta chain × 1 （P14784） Cytokine receptor common gamma chain × 1 （P31785） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 6.1；293 K；29% Pentaerythritol Ethoxylate 15/4; 50 mM Ammonium Sulfate; 50 mM Bis Tris, pH 6.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.30 Å R-free 0.269

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 2B5I Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1Z92 structure of interleukin-2 with its alpha receptor Deposited 2005-03-31 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain B 22–238（217 aa） Fragment：extracellular domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；Na-malonic acid, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 22–233（212 aa）
Mutation：N49S,N68S NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
2ERJ Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 Deposited 2005-10-25 Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 22–233（212 aa）
Mutation：N49S,N68S NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；295.5 K；MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
Resolution 3.00 Å R-free 0.263
3IU3 Crystal structure of the Fab fragment of therapeutic antibody Basiliximab in complex with IL-2Ra (CD25) ectodomain Deposited 2009-08-29 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain K 22–238（217 aa） Fragment：Extracellular domain, ectodomain, UNP residues 22-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；0.2 M KCl, 0.05 M HEPES pH 7.5, and 45% pentaerythritol propoxylate (5/4 PO/OH), VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.90 Å R-free 0.262
3IU3 Crystal structure of the Fab fragment of therapeutic antibody Basiliximab in complex with IL-2Ra (CD25) ectodomain Deposited 2009-08-29 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain J 22–238（217 aa） Fragment：Extracellular domain, ectodomain, UNP residues 22-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；0.2 M KCl, 0.05 M HEPES pH 7.5, and 45% pentaerythritol propoxylate (5/4 PO/OH), VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.90 Å R-free 0.262
3IU3 Crystal structure of the Fab fragment of therapeutic antibody Basiliximab in complex with IL-2Ra (CD25) ectodomain Deposited 2009-08-29 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 22–238（217 aa） Fragment：Extracellular domain, ectodomain, UNP residues 22-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；0.2 M KCl, 0.05 M HEPES pH 7.5, and 45% pentaerythritol propoxylate (5/4 PO/OH), VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.90 Å R-free 0.262
3NFP Crystal structure of the Fab fragment of therapeutic antibody daclizumab in complex with IL-2Ra (CD25) ectodomain Deposited 2010-06-10 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain K 22–238（217 aa） Fragment：UNP residues 22-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；0.1 M Tris-HCl, 0.2M MgCl2, 10% PEG 8000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.86 Å R-free 0.301
3NFP Crystal structure of the Fab fragment of therapeutic antibody daclizumab in complex with IL-2Ra (CD25) ectodomain Deposited 2010-06-10 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain I 22–238（217 aa） Fragment：UNP residues 22-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；0.1 M Tris-HCl, 0.2M MgCl2, 10% PEG 8000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.86 Å R-free 0.301
6VWU X-ray structure of ALKS 4230, a fusion of circularly permuted human Interleukin-2 and Interleukin-2 Receptor alpha Deposited 2020-02-20 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric
Chain A 22–186（165 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；An equal volume of protein was mixed with crystallization buffer, 25 % (w/v) PEG 3350, 0.2 M MgCl2, 0.1 M Hepes 7.5. Large crystals appeared within 48-72 hours, and were frozen in a cryoprotectant consisting of mother liquor with 10 % glycerol
Resolution 3.40 Å R-free 0.297
6YIO CRYSTAL STRUCTURE OF FAB RG6292 IN COMPLEX WITH CD25 ECD Deposited 2020-04-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain B 22–213（192 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；25% v/v PEG Smear Medium (12.5% w/v PEG 3350, 12.5% w/v PEG 4000, 12.5% w/v PEG 2000, 12.5% w/v PEG 5000 MME) 0.1M SODIUM ACETATE, PH 4.5
Resolution 1.83 Å R-free 0.231
7F9W CD25 in complex with Fab Deposited 2021-07-05 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric
Chain A 26–186（161 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7ZMZ Engineered Interleukin 2 bound to CD25 receptor Deposited 2022-04-20 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 21–238（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；19% PEG 3350, 0.2 M Sodium tartrate dibasic dihydrate, 10% glycerol
Resolution 3.20 Å R-free 0.258
9KMC Cryo-EM structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2 and anti-CD25 Fab S417 Deposited 2024-11-15 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 22–240（219 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å

9 other PDB entries and 13 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IL2RA_HUMAN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D； PDBConstruct 1–217； UniProt 22–238

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 2b5i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2b5i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2b5i
Deposition date deposition_date2005-09-28
Structure title titlecytokine receptor complex
Keywords keywordsfour-helix bundle, Fibronectin domain, CYTOKINE-CYTOKINE RECEPTOR COMPLEX; CYTOKINE/CYTOKINE RECEPTOR
Experimental Method methodX-RAY DIFFRACTION
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier31.61 Å
Radius of gyration Rg (electron density) rg_electron30.69 Å
Forward intensity I(0) i092393700.00
Molecular weight molecular_weight75289.0 kDa
Excluded volume excluded_volume93880 ų
Envelope volume envelope_volume123600 ų
Hydration-shell volume shell_volume34199 ų
Envelope diameter envelope_diameter107.1 Å
Shell Rg shell_rg37.04 Å
Envelope Rg envelope_rg30.93 Å
Shape Rg shape_rg30.68 Å
Total Rg total_rg31.30 Å
Total atoms total_atoms5292
Residues n_residues629
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3
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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax101.0 Å
Rg (real space) rg_real31.55 Å
Rg uncertainty (real space) rg_real_error0.77 Å
I(0) (real space) i0_real9.2390e+07
I(0) uncertainty (real space) i0_real_error1.4480e+06
Rg (reciprocal space) rg_reciprocal31.58 Å
I(0) (reciprocal space) i0_reciprocal92400000.0000
Solution quality estimate total_estimate0.9017
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary42.4 Å
Skewness Skewness skewness0.209
Kurtosis Kurtosis kurtosis-0.508
Angular range angular_range— – 0.2500 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12680000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.942; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.897
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (7)

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7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (7 domains)

Domain ID domain_idd2b5ia_
Class classa — All alpha proteins
Fold Fold folda.26 — 4-helical cytokines
Superfamily Superfamily superfamilya.26.1 — 4-helical cytokines
Family Family familya.26.1.2 — Short-chain cytokines
Domain ID domain_idd2b5ib1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.2 — Fibronectin type III
Family Family familyb.1.2.1 — Fibronectin type III
Domain ID domain_idd2b5ib2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.2 — Fibronectin type III
Family Family familyb.1.2.1 — Fibronectin type III
Domain ID domain_idd2b5ic1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.2 — Fibronectin type III
Family Family familyb.1.2.1 — Fibronectin type III
Domain ID domain_idd2b5ic2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.2 — Fibronectin type III
Family Family familyb.1.2.1 — Fibronectin type III
Domain ID domain_idd2b5id1
Class classg — Small proteins
Fold Fold foldg.18 — Complement control module/SCR domain
Superfamily Superfamily superfamilyg.18.1 — Complement control module/SCR domain
Family Family familyg.18.1.1 — Complement control module/SCR domain
Domain ID domain_idd2b5id2
Class classg — Small proteins
Fold Fold foldg.18 — Complement control module/SCR domain
Superfamily Superfamily superfamilyg.18.1 — Complement control module/SCR domain
Family Family familyg.18.1.1 — Complement control module/SCR domain

CATH v4.4 (7 domains)

Domain ID domain_id2b5iA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1250 — Growth Hormone; Chain: A;
Homologous superfamily homologous superfamily10 —
Domain ID domain_id2b5iB01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id2b5iB02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id2b5iC01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id2b5iC02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id2b5iD01
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology70 — Complement Module; domain 1
Homologous superfamily homologous superfamily10 — Complement Module, domain 1
Domain ID domain_id2b5iD02
Class class2 — Mainly Beta
Architecture architecture20 — Single Sheet
Topology topology28 — Rubrerythrin, domain 2
Homologous superfamily homologous superfamily230 —
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8. Citations (1)

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9. Files and Curves (10)