← Back to search

Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P25942 New Search
14PDB entries
35Biological assembly
42chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1CZZ STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 IN COMPLEX WITH A 17-RESIDUE CD40 PEPTIDE Deposited 1999-09-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain D 250–258（9 aa） Fragment：TRAF2-BINDING REGION
Chain E 250–258（9 aa） Fragment：TRAF2-BINDING REGION
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.6；293 K；PEG4K, MES, PH 5.6, VAPOR DIFFUSION, temperature 293K
Resolution 2.70 Å R-free 0.267
1D00 STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 IN COMPLEX WITH A 5-RESIDUE CD40 PEPTIDE Deposited 1999-09-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain I 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；PEG4K, MES, Ph6.0, VAPOR DIFFUSION, temperature 20K
Resolution 2.00 Å R-free 0.254
1D00 STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 IN COMPLEX WITH A 5-RESIDUE CD40 PEPTIDE Deposited 1999-09-07 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain K 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Chain L 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Chain M 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；PEG4K, MES, Ph6.0, VAPOR DIFFUSION, temperature 20K
Resolution 2.00 Å R-free 0.254
1D00 STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 IN COMPLEX WITH A 5-RESIDUE CD40 PEPTIDE Deposited 1999-09-07 Assembly 3 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain N 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Chain O 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Chain P 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；PEG4K, MES, Ph6.0, VAPOR DIFFUSION, temperature 20K
Resolution 2.00 Å R-free 0.254
1D00 STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 IN COMPLEX WITH A 5-RESIDUE CD40 PEPTIDE Deposited 1999-09-07 Assembly 4 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain J 250–254（5 aa） Fragment：ACETYLATED 5-RESIDUE PEPTIDE
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；PEG4K, MES, Ph6.0, VAPOR DIFFUSION, temperature 20K
Resolution 2.00 Å R-free 0.254
1FLL MOLECULAR BASIS FOR CD40 SIGNALING MEDIATED BY TRAF3 Deposited 2000-08-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain X 246–266（21 aa） Fragment：CD40 (246-266) PEPTIDE
Mutation：N246K, C258S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；METHANOL, SODIUM CHLORIDE, TRIS BUFFER, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 3.50 Å R-free 0.312
1FLL MOLECULAR BASIS FOR CD40 SIGNALING MEDIATED BY TRAF3 Deposited 2000-08-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain Y 246–266（21 aa） Fragment：CD40 (246-266) PEPTIDE
Mutation：N246K, C258S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；METHANOL, SODIUM CHLORIDE, TRIS BUFFER, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 3.50 Å R-free 0.312
1FLL MOLECULAR BASIS FOR CD40 SIGNALING MEDIATED BY TRAF3 Deposited 2000-08-14 Assembly 3 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain Y 246–266（21 aa） Fragment：CD40 (246-266) PEPTIDE
Mutation：N246K, C258S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；METHANOL, SODIUM CHLORIDE, TRIS BUFFER, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 3.50 Å R-free 0.312
1LB6 TRAF6-CD40 Complex Deposited 2002-04-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 230–238（9 aa） Fragment：residues 230-238
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；PEG8000, Tris, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.80 Å R-free 0.258
3QD6 Crystal structure of the CD40 and CD154 (CD40L) complex Deposited 2011-01-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain R 21–190（170 aa） Fragment：extracellular domain
Chain S 21–190（170 aa） Fragment：extracellular domain
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；295 K；12% PEG6000, 0.1M MOPS, 10% isopropanol, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 3.50 Å R-free 0.298
3QD6 Crystal structure of the CD40 and CD154 (CD40L) complex Deposited 2011-01-18 Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain T 21–190（170 aa） Fragment：extracellular domain
Chain U 21–190（170 aa） Fragment：extracellular domain
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；295 K；12% PEG6000, 0.1M MOPS, 10% isopropanol, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 3.50 Å R-free 0.298
5DMI Structure of the extracellular domain of the CD40 in complex with CHI220 FAB Deposited 2015-09-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 23–193（171 aa） Fragment：Extracellular domain residues 23-193
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；293 K；80mM sodiym acetate, pH 4.6, 1.6 M ammonium sulfate, 20% (v/v) glycerol
Resolution 3.69 Å R-free 0.207
5DMJ Structure of the extracellular domain of the CD40 in complex with 3H56-5 DAB Deposited 2015-09-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 23–193（171 aa）
Mutation：D153, D180 K POTASSIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；100mM Citric Acid, pH 3.5, 20% (w/v) PEG 4000, 200 mM potassium formate
Resolution 2.79 Å R-free 0.258
5DMJ Structure of the extracellular domain of the CD40 in complex with 3H56-5 DAB Deposited 2015-09-08 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 23–193（171 aa）
Mutation：D153, D180 K POTASSIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；100mM Citric Acid, pH 3.5, 20% (w/v) PEG 4000, 200 mM potassium formate
Resolution 2.79 Å R-free 0.258
5DMJ Structure of the extracellular domain of the CD40 in complex with 3H56-5 DAB Deposited 2015-09-08 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain F 23–193（171 aa）
Mutation：D153, D180 K POTASSIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；100mM Citric Acid, pH 3.5, 20% (w/v) PEG 4000, 200 mM potassium formate
Resolution 2.79 Å R-free 0.258
5IHL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF THE CD40 IN COMPLEX WITH 3H56-5 DAB Deposited 2016-02-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 23–193（171 aa） Fragment：Extra Cellular Domain (UNP residues 23-193)
Mutation：Protein produced with Asn 153 & Asn 180, but deglycosylated with PNGase F, which leaves Asp at those positions SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；80mM Tris-HCl, pH 8.5, 1.6M Ammonium dihydrogen phosphate, 20% (v/v) Glycerol
Resolution 3.30 Å R-free 0.298
5IHL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF THE CD40 IN COMPLEX WITH 3H56-5 DAB Deposited 2016-02-29 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 23–193（171 aa） Fragment：Extra Cellular Domain (UNP residues 23-193)
Mutation：Protein produced with Asn 153 & Asn 180, but deglycosylated with PNGase F, which leaves Asp at those positions No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；80mM Tris-HCl, pH 8.5, 1.6M Ammonium dihydrogen phosphate, 20% (v/v) Glycerol
Resolution 3.30 Å R-free 0.298
5IHL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF THE CD40 IN COMPLEX WITH 3H56-5 DAB Deposited 2016-02-29 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain F 23–193（171 aa） Fragment：Extra Cellular Domain (UNP residues 23-193)
Mutation：Protein produced with Asn 153 & Asn 180, but deglycosylated with PNGase F, which leaves Asp at those positions SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；80mM Tris-HCl, pH 8.5, 1.6M Ammonium dihydrogen phosphate, 20% (v/v) Glycerol
Resolution 3.30 Å R-free 0.298
5IHL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF THE CD40 IN COMPLEX WITH 3H56-5 DAB Deposited 2016-02-29 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 23–193（171 aa） Fragment：Extra Cellular Domain (UNP residues 23-193)
Mutation：Protein produced with Asn 153 & Asn 180, but deglycosylated with PNGase F, which leaves Asp at those positions No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 3.5；293 K；80mM Tris-HCl, pH 8.5, 1.6M Ammonium dihydrogen phosphate, 20% (v/v) Glycerol
Resolution 3.30 Å R-free 0.298
6FAX Complex of Human CD40 Ectodomain with Lob 7.4 Fab Deposited 2017-12-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain R 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；NA
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；NA
Resolution 2.99 Å R-free 0.231
6PE8 Crystal structure of CD40/ABBV-323 FAB complex Deposited 2019-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain U 21–193（173 aa）
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；2M ammonium sulfate, 0.1M phosphate-citrate pH 4.2
Resolution 2.84 Å R-free 0.265
6PE8 Crystal structure of CD40/ABBV-323 FAB complex Deposited 2019-06-20 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain T 21–193（173 aa）
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；2M ammonium sulfate, 0.1M phosphate-citrate pH 4.2
Resolution 2.84 Å R-free 0.265
6PE9 Crystal Structure of CD40 complexed to FAB516 Deposited 2019-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain I 21–193（173 aa）
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；1.6M Ammonium Sulfate 2% w/v PEG1000, 100 mM HEPES Sodium Salt pH 7.5
Resolution 3.13 Å R-free 0.255
6PE9 Crystal Structure of CD40 complexed to FAB516 Deposited 2019-06-20 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain G 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；1.6M Ammonium Sulfate 2% w/v PEG1000, 100 mM HEPES Sodium Salt pH 7.5
Resolution 3.13 Å R-free 0.255
6PE9 Crystal Structure of CD40 complexed to FAB516 Deposited 2019-06-20 Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain U 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；1.6M Ammonium Sulfate 2% w/v PEG1000, 100 mM HEPES Sodium Salt pH 7.5
Resolution 3.13 Å R-free 0.255
6PE9 Crystal Structure of CD40 complexed to FAB516 Deposited 2019-06-20 Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain V 21–193（173 aa）
Not recorded SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；1.6M Ammonium Sulfate 2% w/v PEG1000, 100 mM HEPES Sodium Salt pH 7.5
Resolution 3.13 Å R-free 0.255
6PE9 Crystal Structure of CD40 complexed to FAB516 Deposited 2019-06-20 Assembly 5 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain J 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；296.15 K；1.6M Ammonium Sulfate 2% w/v PEG1000, 100 mM HEPES Sodium Salt pH 7.5
Resolution 3.13 Å R-free 0.255
7P3I Crystal structure of human CD40/TNFRSF5 in complex with the anti-CD40 DARPin protein Deposited 2021-07-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 21–193（173 aa） Fragment：>FRAGMENT<
Not recorded NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；277 K；29.9999 %w/v PEG 4K, 0.24 M LiSO4, 0.0999 M TRIS, 0.35 M NaBr
Resolution 2.29 Å R-free 0.253
7P3I Crystal structure of human CD40/TNFRSF5 in complex with the anti-CD40 DARPin protein Deposited 2021-07-07 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 21–193（173 aa） Fragment：>FRAGMENT<
Not recorded NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；277 K；29.9999 %w/v PEG 4K, 0.24 M LiSO4, 0.0999 M TRIS, 0.35 M NaBr
Resolution 2.29 Å R-free 0.253
8YX1 CD40 in complex with Bleselumab Fab Deposited 2024-04-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain R 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium chloride 20% w/v Polyethylene glycol 3,350
Resolution 2.70 Å R-free 0.265
8YX1 CD40 in complex with Bleselumab Fab Deposited 2024-04-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 21–193（173 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium chloride 20% w/v Polyethylene glycol 3,350
Resolution 2.70 Å R-free 0.265
8YX9 CD40 in complex with Dacetuzumab Fab Deposited 2024-04-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 21–193（173 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium citrate tribasic pH 7.0 20% w/v Polyethylene glycol 3,350
Resolution 2.80 Å R-free 0.262
8YX9 CD40 in complex with Dacetuzumab Fab Deposited 2024-04-02 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain J 21–193（173 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium citrate tribasic pH 7.0 20% w/v Polyethylene glycol 3,350
Resolution 2.80 Å R-free 0.262
8YX9 CD40 in complex with Dacetuzumab Fab Deposited 2024-04-02 Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 21–193（173 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium citrate tribasic pH 7.0 20% w/v Polyethylene glycol 3,350
Resolution 2.80 Å R-free 0.262
8YX9 CD40 in complex with Dacetuzumab Fab Deposited 2024-04-02 Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain K 21–193（173 aa）
Not recorded GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M Ammonium citrate tribasic pH 7.0 20% w/v Polyethylene glycol 3,350
Resolution 2.80 Å R-free 0.262

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.