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5lgk

Crystal structure of the human IgE-Fc bound to its B cell receptor derCD23

Method: X-RAY DIFFRACTION Dmax: 152.9 Å Quality: GOOD
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Ig epsilon chain C region

Homo sapiens

UniProt P01854

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 × 3 其他Polymer 1 PDB declaration: trimeric（3） Consistent with protein copy count Chain A； UniProt 114–421 Chain B； UniProt 114–421 Not recorded Low affinity immunoglobulin epsilon Fc receptor × 1 （P06734） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate Resolution 3.50 Å R-free 0.278
2 Other combination Heteromer Protein × 3 其他Polymer 1 PDB declaration: trimeric（3） Consistent with protein copy count Chain C； UniProt 114–421 Chain D； UniProt 114–421 Not recorded Low affinity immunoglobulin epsilon Fc receptor × 1 （P06734） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate Resolution 3.50 Å R-free 0.278

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 5LGK Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1F6A Structure of the human ige-fc bound to its high affinity receptor fc(epsilon)ri(alpha) Deposited 2000-06-20 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 B 211–428（218 aa） Fragment：C(EPSILON)3-C(EPSILON)4 DOMAINS
Chain D 211–428（218 aa） Fragment：C(EPSILON)3-C(EPSILON)4 DOMAINS
Not recorded SO4 SULFATE ION × 5 CPS 3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；296 K；Ammonium Sulfate, Tris, CHAPS, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 3.50 Å R-free 0.273
1FP5 CRYSTAL STRUCTURE ANALYSIS OF THE HUMAN IGE-FC CEPSILON3-CEPSILON4 FRAGMENT. Deposited 2000-08-30 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 357–574（218 aa） Fragment：CEPSILON3-CEPSILON4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；295 K；PEG 4000, sodium acetate pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.30 Å R-free 0.270
1G84 THE SOLUTION STRUCTURE OF THE C EPSILON2 DOMAIN FROM IGE Deposited 2000-11-16 Different construct 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 106–210（105 aa） Fragment：C EPSILON2
Mutation：C16S, C104S No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 100mM；Pressure 1
NMR sample composition 2mM Ce2 U-15N,13C | 90% H2O/10% D2O
NMR sample composition 1.4mM Ce2 U-15N | 90% H2O/10% D2O
Resolution not provided
2WQR The high resolution crystal structure of IgE Fc Deposited 2009-08-26 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 105–427（323 aa） Fragment：FC FRAGMENT, RESIDUES 105-427
Chain B 105–427（323 aa） Fragment：FC FRAGMENT, RESIDUES 105-427
Mutation：YES Mutation：YES SO4 SULFATE ION × 4 GOL GLYCEROL × 2 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 PG4 TETRAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 8.5；291 K；THE PROTEIN CONCENTRATION WAS 1.9 MG/ML. CRYSTALS GREW AT 18 DEGREES C WITH 14% PEG 8000, 200MM LITHIUM SULPHATE, 100MM TRIS-HCL PH 8.5 AS PRECIPITANT.
Resolution 1.90 Å R-free 0.234
2Y7Q THE HIGH-AFFINITY COMPLEX BETWEEN IGE AND ITS RECEPTOR FC EPSILON RI Deposited 2011-02-01 Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain B 104–428（325 aa） Fragment：FC FRAGMENT COMPRISING DOMAINS CEPSILON2-4, RESIDUES 104-427
Chain D 104–428（325 aa） Fragment：FC FRAGMENT COMPRISING DOMAINS CEPSILON2-4, RESIDUES 104-427
Mutation：YES Mutation：YES NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；SITTING DROP VAPOR DIFFUSION. RESERVOIR SOLUTION CONTAINED 2.8M SODIUM ACETATE PH 7.
Resolution 3.40 Å R-free 0.292
3H9Y Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.23 Å R-free 0.262
3H9Y Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q NH4 AMMONIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.23 Å R-free 0.262
3H9Z Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter of well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.45 Å R-free 0.277
3H9Z Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q NH4 AMMONIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter of well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.45 Å R-free 0.277
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Chain F 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain B 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain D 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded MAN alpha-D-mannopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain F 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded MAN alpha-D-mannopyranose × 2 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Chain F 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GRG Crystal structure of IgE complexed with E2_79, an anti-IgE inhibitor Deposited 2012-08-24 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 210–428（219 aa） Fragment：IG-LIKE DOMAINS 3 AND 4, RESIDUES 210-428
Chain D 210–428（219 aa） Fragment：IG-LIKE DOMAINS 3 AND 4, RESIDUES 210-428
Mutation：G216C Mutation：G216C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；298 K；0.1 M Phosphate-citrate pH 4.2, 5% (w/v) PEG-3000, 25% (v/v) 1,2-propanediol, 10% (v/v) glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 4.24 Å R-free 0.338
4GT7 An engineered disulfide bond reversibly traps the IgE-Fc3-4 in a closed, non-receptor binding conformation Deposited 2012-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Chain B 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Mutation：C328A, G335C Mutation：C328A, G335C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 4.5；298 K；20 mM sodium acetate, pH 4.6, 28.8% (w/v) PEG 4000, 2% (w/v) Anapoe -X-405, VAPOR DIFFUSION, temperature 298K
Resolution 2.61 Å R-free 0.253
4GT7 An engineered disulfide bond reversibly traps the IgE-Fc3-4 in a closed, non-receptor binding conformation Deposited 2012-08-28 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain C 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Chain D 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Mutation：C328A, G335C Mutation：C328A, G335C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 4.5；298 K；20 mM sodium acetate, pH 4.6, 28.8% (w/v) PEG 4000, 2% (w/v) Anapoe -X-405, VAPOR DIFFUSION, temperature 298K
Resolution 2.61 Å R-free 0.253
4J4P The complex of human IgE-Fc with two bound Fab fragments Deposited 2013-02-07 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 105–427（323 aa）
Chain B 105–427（323 aa）
Mutation：N265Q, N371Q Mutation：N265Q, N371Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；291 K；PEG 3350, sodium citrate, bis-tris propane, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.91 Å R-free 0.284
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Chain B 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Chain D 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
5ANM Crystal structure of IgE Fc in complex with a neutralizing antibody Deposited 2015-09-07 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain G 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100 MM MGCL2, 100 MM SODIUM CITRATE PH 5.0 AND 15% PEG 4000
Resolution 2.85 Å R-free 0.260
5ANM Crystal structure of IgE Fc in complex with a neutralizing antibody Deposited 2015-09-07 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Chain F 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100 MM MGCL2, 100 MM SODIUM CITRATE PH 5.0 AND 15% PEG 4000
Resolution 2.85 Å R-free 0.260
5HYS Structure of IgE complexed with omalizumab Deposited 2016-02-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain G 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Chain I 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Mutation：C328A, G335C Mutation：C328A, G335C SO4 SULFATE ION × 22 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；294 K；0.2M Lithium Sulfate, 0.1 M Tris pH 8.5, and 41% PEG 400
Resolution 2.50 Å R-free 0.239
5HYS Structure of IgE complexed with omalizumab Deposited 2016-02-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain J 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Chain K 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Mutation：C328A, G335C Mutation：C328A, G335C SO4 SULFATE ION × 26 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；294 K；0.2M Lithium Sulfate, 0.1 M Tris pH 8.5, and 41% PEG 400
Resolution 2.50 Å R-free 0.239
5LGJ THE CRYSTAL STRUCTURE OF IGE FC MUTANT - P333C Deposited 2016-07-07 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric
Chain A 108–426（319 aa）
Not recorded SO4 SULFATE ION × 3 PG4 TETRAETHYLENE GLYCOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；16% w/v PEG 8,000, 0.1M Tris-HCl pH 8.5, 0.2 M lithium sulfate
Resolution 2.60 Å R-free 0.248
5LGJ THE CRYSTAL STRUCTURE OF IGE FC MUTANT - P333C Deposited 2016-07-07 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Monomer；Protein × 1 PDB declaration: monomeric
Chain B 108–427（320 aa）
Not recorded SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；16% w/v PEG 8,000, 0.1M Tris-HCl pH 8.5, 0.2 M lithium sulfate
Resolution 2.60 Å R-free 0.248
5MOI Crystal structure of human IgE-Fc epsilon 3-4 Deposited 2016-12-14 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 6 PDB declaration: hexameric
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Chain C 209–428（220 aa）
Chain D 209–428（220 aa）
Chain E 209–428（220 aa）
Chain F 209–428（220 aa）
Not recorded PEG DI(HYDROXYETHYL)ETHER × 6 PO4 PHOSPHATE ION × 6 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；25% (v/v) PEG1500, 0.1M SPG (succinic acid, sodium dihydrogen phosphate and glycine in the ratio 2:7:7)
Resolution 2.20 Å R-free 0.234
5MOJ Crystal structure of IgE-Fc epsilon 3-4 Deposited 2016-12-14 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Not recorded SO4 SULFATE ION × 7 EDO 1,2-ETHANEDIOL × 2 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；25% PEG 4000 0.15M Ammonium Sulphate 0.1M MES
Resolution 2.26 Å R-free 0.236
5MOK Crystal structure of human IgE-Fc epsilon 3-4 Deposited 2016-12-14 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 4 PDB declaration: tetrameric
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Chain C 209–428（220 aa）
Chain D 209–428（220 aa）
Not recorded PEG DI(HYDROXYETHYL)ETHER × 2 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；25% (v/v) PEG1500 0.1M SPG (succinic acid, sodium dihydrogen phosphate and glycine in the ratio 2:7:7) at pH 6.0
Resolution 2.00 Å R-free 0.226
5MOL Human IgE-Fc crystal structure Deposited 2016-12-14 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 104–428（325 aa）
Chain B 104–428（325 aa）
Not recorded PG0 2-(2-METHOXYETHOXY)ETHANOL × 2 EDO 1,2-ETHANEDIOL × 5 PEG DI(HYDROXYETHYL)ETHER × 2 AE3 2-(2-ETHOXYETHOXY)ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；0.1M Tris HCL pH 8.5 25% PEG 550 MME
Resolution 1.75 Å R-free 0.232
5NQW IgE-Fc in complex with single domain antibody 026 Deposited 2017-04-21 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 215–426（212 aa）
Chain B 215–426（212 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277 K；0.1 M imidazole pH 7.0 11-12 % polyethylene glycol 20.000
Resolution 3.40 Å R-free 0.241
6EYO Structure of extended IgE-Fc in complex with two anti-IgE Fabs Deposited 2017-11-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 104–428（325 aa）
Chain B 104–428（325 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；291 K；0.1M Tris-HCl pH8.0 and 45% (v/v) pentaerythritol propoxylate (5/4PO/OH)
Resolution 3.70 Å R-free 0.288
6UQR Complex of IgE and Ligelizumab Deposited 2019-10-21 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 209–426（218 aa） Fragment：C3-4
Chain D 209–426（218 aa） Fragment：C3-4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.9；287.15 K；0.2M Na Thiocyanate pH 6.9, 20% PEG3350, 10 mM Spermidine
Resolution 3.65 Å R-free 0.295
7MXI IgE-Fc in complex with DARPins E2_79 and E3_53 Deposited 2021-05-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；E3_53, E2_79, and IgE-Fc3-4 were mixed in equimolar ratios with E3_53 and E2_79, and intact complexes were purified by SEC in 20 mM Tris-HCl, pH 8.0, 50mM NaCl and concentrated to 7mg/ml and mixed 1:1 with acetate buffer pH 4.6, 43% ethylene glycol w/v in hanging drops
Resolution 2.80 Å R-free 0.256
7SHT Structure of a partially disrupted IgE high affinity receptor complex bound to an omalizumab variant Deposited 2021-10-11 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 × 7 PDB declaration: heptameric
Chain B 109–428（320 aa）
Chain D 109–428（320 aa）
Mutation：G335C Mutation：G335C NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.29 Å
7SHU IgE-Fc in complex with omalizumab variant C02 Deposited 2021-10-11 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 209–426（218 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 EDO 1,2-ETHANEDIOL × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.2M Lithium sulfate, 0.1 M Phosphate citrate pH 4.2, 20% (w/v) PEG 1000
Resolution 2.75 Å R-free 0.275
7SHU IgE-Fc in complex with omalizumab variant C02 Deposited 2021-10-11 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 209–426（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.2M Lithium sulfate, 0.1 M Phosphate citrate pH 4.2, 20% (w/v) PEG 1000
Resolution 2.75 Å R-free 0.275
7SHY IgE-Fc in complex with omalizumab scFv Deposited 2021-10-11 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 MAN alpha-D-mannopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.02 M Magnesium chloride, 0.1M HEPES pH 7.5, 22% (w/v) Polyacrylic acid 5100 sodium salt
Resolution 3.00 Å R-free 0.230
7SHY IgE-Fc in complex with omalizumab scFv Deposited 2021-10-11 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded GOL GLYCEROL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.02 M Magnesium chloride, 0.1M HEPES pH 7.5, 22% (w/v) Polyacrylic acid 5100 sodium salt
Resolution 3.00 Å R-free 0.230
7SHZ IgE-Fc in complex with HAE Deposited 2021-10-11 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 PO4 PHOSPHATE ION × 2 ACT ACETATE ION × 1 EDO 1,2-ETHANEDIOL × 2 MAN alpha-D-mannopyranose × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Sodium acetate pH 4.6, 8% (w/v) PEG 4000
Resolution 3.00 Å R-free 0.235
7SHZ IgE-Fc in complex with HAE Deposited 2021-10-11 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Sodium acetate pH 4.6, 8% (w/v) PEG 4000
Resolution 3.00 Å R-free 0.235
7SI0 IgE-Fc in complex with 813 Deposited 2021-10-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M CAPS pH 10.5, 40%(v/v) MPD
Resolution 3.00 Å R-free 0.261
7SI0 IgE-Fc in complex with 813 Deposited 2021-10-12 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M CAPS pH 10.5, 40%(v/v) MPD
Resolution 3.00 Å R-free 0.261
8C1B Focused map for structure of IgE bound to the ectodomain of FceRIa Deposited 2022-12-20 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain H 108–423（316 aa）
Chain X 108–423（316 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8C1C Structure of IgE bound to the ectodomain of FceRIa Deposited 2022-12-20 Different construct 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 H 1–423（423 aa）
Chain X 1–423（423 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8Z0T Structure of the human ige-fc bound to its high affinity receptor fc(epsilon) Deposited 2024-04-10 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric
Chain D 106–428（323 aa）
Chain E 106–428（323 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.58 Å

33 other PDB entries and 50 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IGHE_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–307； UniProt 114–421 Author chain B； PDBConstruct 1–307； UniProt 114–421 Author chain C； PDBConstruct 1–307； UniProt 114–421 Author chain D； PDBConstruct 1–307； UniProt 114–421

Low affinity immunoglobulin epsilon Fc receptor

Homo sapiens

UniProt P06734

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 × 3 其他Polymer 1 PDB declaration: trimeric（3） Consistent with protein copy count Chain E； UniProt 165–284 Not recorded Ig epsilon chain C region × 2 （P01854） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate Resolution 3.50 Å R-free 0.278
2 Other combination Heteromer Protein × 3 其他Polymer 1 PDB declaration: trimeric（3） Consistent with protein copy count Chain F； UniProt 165–284 Not recorded Ig epsilon chain C region × 2 （P01854） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate Resolution 3.50 Å R-free 0.278

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 5LGK Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1T8C Structure of the C-type lectin domain of CD23 Deposited 2004-05-12 Different construct 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 156–298（143 aa） Fragment：derCD23
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；308 K；Ionic strength (raw mmCIF value) 162 mM；Pressure 1
NMR sample composition 25mM Tris, 125mM NaCl, 4mM CaCl2, 0.02% NaN3, 2mM soluble CD23
Resolution not provided
1T8D Structure of the C-type lectin domain of CD23 Deposited 2004-05-12 Different construct 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 156–298（143 aa） Fragment：derCD23
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；308 K；Ionic strength (raw mmCIF value) 162 mM；Pressure 1
NMR sample composition 25 mM Tris, 125 mM NaCl, 4 mM CaCl2, 0.02% NaN3, 2 mM [U-100% 13C; U-100% 15N] soluble CD23
Resolution not provided
2H2R Crystal structure of the human CD23 Lectin domain, apo form Deposited 2006-05-19 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 150–321（172 aa） Fragment：lectin domain
Chain B 150–321（172 aa） Fragment：lectin domain
Mutation：H213R, G256S Mutation：H213R, G256S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.2；293 K；1.2 M sodium monobasic phosphate, 0.8 M potassium dibasic phosphate, 0.1 M Caps buffer pH 10.5, and 0.2 M lithium sulfate; final pH 6.2 , VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.50 Å R-free 0.165
2H2T CD23 Lectin domain, Calcium 2+-bound Deposited 2006-05-19 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 B 150–321（172 aa） Fragment：lectin domain
Mutation：H213R, G256S CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；17% (w/v) PEG 4000, 100 mM Mes buffer, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.30 Å R-free 0.200
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain G 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Chain H 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain I 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Chain J 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Not recorded MAN alpha-D-mannopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain K 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Chain L 156–298（143 aa） Fragment：Human derCD23, UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4G96 Crystal structure of calcium2+-free wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.25 Å R-free 0.236
4G96 Crystal structure of calcium2+-free wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded SO4 SULFATE ION × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.25 Å R-free 0.236
4G96 Crystal structure of calcium2+-free wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.25 Å R-free 0.236
4G96 Crystal structure of calcium2+-free wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.25 Å R-free 0.236
4G9A Crystal structure of calcium2+-bound wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.00 Å R-free 0.205
4G9A Crystal structure of calcium2+-bound wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.00 Å R-free 0.205
4G9A Crystal structure of calcium2+-bound wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.00 Å R-free 0.205
4G9A Crystal structure of calcium2+-bound wild-type CD23 lectin domain Deposited 2012-07-23 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.00 Å R-free 0.205
4GI0 Crystal structure of CD23 lectin domain mutant E249A Deposited 2012-08-08 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric
Chain A 156–298（143 aa） Fragment：UNP residues 156-298
Chain B 156–298（143 aa） Fragment：UNP residues 156-298
Chain C 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：E249A Mutation：E249A Mutation：E249A GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2M potassium thiocyanate, 0.1M bis tris propane pH 8.5, 20% PEG 3350, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.27 Å R-free 0.251
4GJ0 Crystal structure of CD23 lectin domain mutant S252A Deposited 2012-08-09 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 1.95 Å R-free 0.212
4GJ0 Crystal structure of CD23 lectin domain mutant S252A Deposited 2012-08-09 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 1.95 Å R-free 0.212
4GJ0 Crystal structure of CD23 lectin domain mutant S252A Deposited 2012-08-09 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 1.95 Å R-free 0.212
4GJ0 Crystal structure of CD23 lectin domain mutant S252A Deposited 2012-08-09 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 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；291 K；18.5% PEG 6000, 2% 1,6-hexanediol, 0.05M ammonium sulphate, 0.1M sodium acetate pH 4.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 1.95 Å R-free 0.212
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GJX Crystal structure of CD23 lectin domain mutant D258A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D258A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；291 K；18% ethanol, 4% PEG 400, 0.1 M sodium acetate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.80 Å R-free 0.251
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 2 SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 1 SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 2 SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 2 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 1 SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 3 SO4 SULFATE ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GK1 Crystal structure of CD23 lectin domain mutant D270A Deposited 2012-08-10 Different construct 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 156–298（143 aa） Fragment：UNP residues 156-298
Mutation：D270A GOL GLYCEROL × 1 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；30% PEG 4000, 0.3M ammonium sulphate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.24 Å R-free 0.226
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain G 156–298（143 aa） Fragment：UNP residues 156-298
Chain H 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain I 156–298（143 aa） Fragment：UNP residues 156-298
Chain J 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded MAN alpha-D-mannopyranose × 2 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain K 156–298（143 aa） Fragment：UNP residues 156-298
Chain L 156–298（143 aa） Fragment：UNP residues 156-298
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4J6J Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form A) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；298 K；16 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.7 , VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.217
4J6J Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form A) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；298 K；16 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.7 , VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.217
4J6J Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form A) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；298 K；16 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.7 , VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.217
4J6J Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form A) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.7；298 K；16 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.7 , VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.217
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 E 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 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 F 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6K Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form B) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；18 % (w/v) PEG 6,000, 2 % (v/v) 1,6-hexanediol, 0.05 M ammonium sulfate and 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.30 Å R-free 0.218
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 E 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 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 F 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6L Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form C) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；25 % (w/v) PEG 4,000, 0.15 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.15 Å R-free 0.253
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 E 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 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 F 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6M Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form D) Deposited 2013-02-11 Different construct 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；22.5 % (w/v) PEG 3,350, 0.2 M ammonium sulfate and 0.1 M MES pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.48 Å R-free 0.243
4J6N Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form E) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.25；298 K；30 % (w/v) PEG 1,500 and 0.1 M Malic acid: MES: Tris (MMT) buffer pH 4.25, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.85 Å R-free 0.317
4J6N Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form E) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.25；298 K；30 % (w/v) PEG 1,500 and 0.1 M Malic acid: MES: Tris (MMT) buffer pH 4.25, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.85 Å R-free 0.317
4J6P Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form F) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.75；298 K；22.5 % (w/v) PEG 4,000 and 0.1 M sodium citrate pH 4.75, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.214
4J6P Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form F) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.75；298 K；22.5 % (w/v) PEG 4,000 and 0.1 M sodium citrate pH 4.75, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.214
4J6P Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form F) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.75；298 K；22.5 % (w/v) PEG 4,000 and 0.1 M sodium citrate pH 4.75, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.214
4J6P Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form F) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.75；298 K；22.5 % (w/v) PEG 4,000 and 0.1 M sodium citrate pH 4.75, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.90 Å R-free 0.214
4J6Q Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form G) Deposited 2013-02-11 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 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；3.7 M NaCl and 0.1 M citric acid pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.54 Å R-free 0.239
4J6Q Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form G) Deposited 2013-02-11 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 156–298（143 aa） Fragment：Soluble head domain of the B-cell receptor CD23 (UNP Residues 156-298)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；298 K；3.7 M NaCl and 0.1 M citric acid pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.54 Å R-free 0.239
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 156–298（143 aa） Fragment：HUMAN DERCD23, UNP residues 156-298
Chain F 156–298（143 aa） Fragment：HUMAN DERCD23, UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric
Chain G 156–298（143 aa） Fragment：HUMAN DERCD23, UNP residues 156-298
Chain H 156–298（143 aa） Fragment：HUMAN DERCD23, UNP residues 156-298
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
6Y0L Crystal structure of human CD23 lectin domain N225D, K229E, S252N, T251N, R253G, S254G mutant Deposited 2020-02-09 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 156–298（143 aa）
Mutation：N225D, K229E, S252N, T251N, R253G, S254G GOL GLYCEROL × 3 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；2.0M ammonium sulphate, 0.2M sodium chloride, 0.1M sodium-cacodylate, 8mM CaCl2
Resolution 1.65 Å R-free 0.205
6Y0M Crystal structure of human CD23 lectin domain N225D, K229E, S252N, T251N mutant Deposited 2020-02-09 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 156–298（143 aa）
Mutation：N225D, K229E, S252N, T251N No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；291 K；0.1M sodium-cacodylate pH 6.5, 1M tri-sodium-citrate Crystals were soaked with a solution of 0.1M sodium-cacodylate at pH 7.1, 1.4M tri-sodium-citrate and 10mM CaCl2 for four days before harvesting which also served as a cryoprotectant.
Resolution 1.50 Å R-free 0.212

22 other PDB entries and 78 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FCER2_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain E； PDBConstruct 1–120； UniProt 165–284 Author chain F； PDBConstruct 1–120； UniProt 165–284

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 5lgk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5lgk
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5lgk
Deposition date deposition_date2016-07-07
Structure title titleCrystal structure of the human IgE-Fc bound to its B cell receptor derCD23
Keywords keywordsIMMUNOGLOBULIN FOLD LECTIN, ANTIBODY RECEPTOR, IMMUNE SYSTEM; IMMUNE SYSTEM
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_guinier43.98 Å
Radius of gyration Rg (electron density) rg_electron43.93 Å
Forward intensity I(0) i0424794000.00
Molecular weight molecular_weight162420.0 kDa
Excluded volume excluded_volume200760 ų
Envelope volume envelope_volume305690 ų
Hydration-shell volume shell_volume59731 ų
Envelope diameter envelope_diameter151.5 Å
Shell Rg shell_rg46.92 Å
Envelope Rg envelope_rg43.27 Å
Shape Rg shape_rg43.92 Å
Total Rg total_rg44.10 Å
Total atoms total_atoms11420
Residues n_residues1432
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 dmax152.9 Å
Rg (real space) rg_real44.18 Å
Rg uncertainty (real space) rg_real_error1.64 Å
I(0) (real space) i0_real4.2480e+08
I(0) uncertainty (real space) i0_real_error7.6430e+06
Rg (reciprocal space) rg_reciprocal43.98 Å
I(0) (reciprocal space) i0_reciprocal424700000.0000
Solution quality estimate total_estimate0.8566
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary46.7 Å
Skewness Skewness skewness0.463
Kurtosis Kurtosis kurtosis-0.344
Angular range angular_range— – 0.1800 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha45260000.0000
Real-space data points n_real_points37
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.780; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.942; Smooth: 0.848
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (4)

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7. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

Domain ID domain_id5lgkA01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkA03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkB01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkB02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkB03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkC01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkC02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkC03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkD01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkD02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkD03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5lgkE01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology100 — Mannose-Binding Protein A; Chain A
Homologous superfamily homologous superfamily10 — Mannose-Binding Protein A, subunit A
Domain ID domain_id5lgkF01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology100 — Mannose-Binding Protein A; Chain A
Homologous superfamily homologous superfamily10 — Mannose-Binding Protein A, subunit A
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8. Citations (1)

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9. Files and Curves (10)