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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：Q9Y275 New Search
12PDB entries
18Biological assembly
140chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method 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
1JH5 Crystal Structure of sTALL-1 of TNF family ligand Deposited 2001-06-27 Assembly 1 Protein homooligomer Homooligomer；Protein × 60 PDB declaration: 60-meric（60） Consistent with protein count
Chain A 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain B 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain C 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain D 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain E 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain F 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain G 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain H 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain I 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Chain J 142–285（144 aa） Fragment：sTALL-1, soluble part of TALL-1
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 9；277 K；35% dioxane, pH 9.0, VAPOR DIFFUSION, HANGING DROP at 277K
Resolution 3.00 Å R-free 0.252
1KD7 Crystal structure of an extracellular domain fragment of human BAFF Deposited 2001-11-12 Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 122–285（164 aa） Fragment：Extracellular domain fragment
Chain B 122–285（164 aa） Fragment：Extracellular domain fragment
Chain C 122–285（164 aa） Fragment：Extracellular domain fragment
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；277 K；8% PEG 4000, 0.1 M sodium acetatesolution of 8% PEG 4000, 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.80 Å R-free 0.250
1KD7 Crystal structure of an extracellular domain fragment of human BAFF Deposited 2001-11-12 Assembly 2 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain K 122–285（164 aa） Fragment：Extracellular domain fragment
Chain L 122–285（164 aa） Fragment：Extracellular domain fragment
Chain M 122–285（164 aa） Fragment：Extracellular domain fragment
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；277 K；8% PEG 4000, 0.1 M sodium acetatesolution of 8% PEG 4000, 0.1 M sodium acetate pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.80 Å R-free 0.250
1KXG The 2.0 Ang Resolution Structure of BLyS, B Lymphocyte Stimulator. Deposited 2002-01-31 Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Chain B 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Chain C 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Not recorded MG MAGNESIUM ION × 4 CIT CITRIC ACID × 1 DIO 1,4-DIETHYLENE DIOXIDE × 13 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；279 K；25% dioxane, 25 mM MgCl2, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 279.0K
Resolution 2.00 Å R-free 0.209
1KXG The 2.0 Ang Resolution Structure of BLyS, B Lymphocyte Stimulator. Deposited 2002-01-31 Assembly 2 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Chain E 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Chain F 134–285（152 aa） Fragment：soluble portion (residues 134-285)
Not recorded MG MAGNESIUM ION × 3 CIT CITRIC ACID × 1 DIO 1,4-DIETHYLENE DIOXIDE × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；279 K；25% dioxane, 25 mM MgCl2, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 279.0K
Resolution 2.00 Å R-free 0.209
1OQD Crystal structure of sTALL-1 and BCMA Deposited 2003-03-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 108 PDB declaration: 108-meric（108） Consistent with protein count
Chain A 142–285（144 aa） Fragment：extracellular domain
Chain B 142–285（144 aa） Fragment：extracellular domain
Chain C 142–285（144 aa） Fragment：extracellular domain
Chain D 142–285（144 aa） Fragment：extracellular domain
Chain E 142–285（144 aa） Fragment：extracellular domain
Chain F 142–285（144 aa） Fragment：extracellular domain
Chain G 142–285（144 aa） Fragment：extracellular domain
Chain H 142–285（144 aa） Fragment：extracellular domain
Chain I 142–285（144 aa） Fragment：extracellular domain
Chain J 142–285（144 aa） Fragment：extracellular domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 9；277 K；dioxane, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.60 Å R-free 0.260
1OQE Crystal structure of sTALL-1 with BAFF-R Deposited 2003-03-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 108 PDB declaration: 108-meric（108） Consistent with protein count
Chain A 142–285（144 aa） Fragment：extracellular domain
Chain B 142–285（144 aa） Fragment：extracellular domain
Chain C 142–285（144 aa） Fragment：extracellular domain
Chain D 142–285（144 aa） Fragment：extracellular domain
Chain E 142–285（144 aa） Fragment：extracellular domain
Chain F 142–285（144 aa） Fragment：extracellular domain
Chain G 142–285（144 aa） Fragment：extracellular domain
Chain H 142–285（144 aa） Fragment：extracellular domain
Chain I 142–285（144 aa） Fragment：extracellular domain
Chain J 142–285（144 aa） Fragment：extracellular domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 9；dioxane, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 100K
Resolution 2.50 Å R-free 0.259
1OSG Complex between BAFF and a BR3 derived peptide presented in a beta-hairpin scaffold Deposited 2003-03-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 82–285（204 aa） Fragment：TNF domain
Chain B 82–285（204 aa） Fragment：TNF domain
Chain C 82–285（204 aa） Fragment：TNF domain
Not recorded MG MAGNESIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.7；292 K；20% PEG 3350, 1.0 M LiCl, 0.1M sodium cacodylate, pH 6.7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 3.00 Å R-free 0.286
1OSG Complex between BAFF and a BR3 derived peptide presented in a beta-hairpin scaffold Deposited 2003-03-19 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain D 82–285（204 aa） Fragment：TNF domain
Chain E 82–285（204 aa） Fragment：TNF domain
Chain F 82–285（204 aa） Fragment：TNF domain
Not recorded MG MAGNESIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.7；292 K；20% PEG 3350, 1.0 M LiCl, 0.1M sodium cacodylate, pH 6.7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 3.00 Å R-free 0.286
3V56 Re-refinement of PDB entry 1OSG - Complex between BAFF and a BR3 derived peptide presented in a beta-hairpin scaffold - reveals an additonal copy of the peptide. Deposited 2011-12-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 82–285（204 aa）
Chain B 82–285（204 aa）
Chain C 82–285（204 aa）
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.00 Å R-free 0.200
3V56 Re-refinement of PDB entry 1OSG - Complex between BAFF and a BR3 derived peptide presented in a beta-hairpin scaffold - reveals an additonal copy of the peptide. Deposited 2011-12-16 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain D 82–285（204 aa）
Chain E 82–285（204 aa）
Chain F 82–285（204 aa）
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.00 Å R-free 0.200
4V46 Crystal structure of the BAFF-BAFF-R complex Deposited 2003-03-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 120 PDB declaration: 120-meric（120） Consistent with protein count
Chain A0 138–285（148 aa） Fragment：residues 138-285
Chain A1 138–285（148 aa） Fragment：residues 138-285
Chain A2 138–285（148 aa） Fragment：residues 138-285
Chain A3 138–285（148 aa） Fragment：residues 138-285
Chain A4 138–285（148 aa） Fragment：residues 138-285
Chain A5 138–285（148 aa） Fragment：residues 138-285
Chain A6 138–285（148 aa） Fragment：residues 138-285
Chain A7 138–285（148 aa） Fragment：residues 138-285
Chain A8 138–285（148 aa） Fragment：residues 138-285
Chain A9 138–285（148 aa） Fragment：residues 138-285
Chain AA 138–285（148 aa） Fragment：residues 138-285
Chain AB 138–285（148 aa） Fragment：residues 138-285
Chain AC 138–285（148 aa） Fragment：residues 138-285
Chain AD 138–285（148 aa） Fragment：residues 138-285
Chain AE 138–285（148 aa） Fragment：residues 138-285
Chain AF 138–285（148 aa） Fragment：residues 138-285
Chain AG 138–285（148 aa） Fragment：residues 138-285
Chain AH 138–285（148 aa） Fragment：residues 138-285
Chain AI 138–285（148 aa） Fragment：residues 138-285
Chain AJ 138–285（148 aa） Fragment：residues 138-285
Chain AK 138–285（148 aa） Fragment：residues 138-285
Chain AL 138–285（148 aa） Fragment：residues 138-285
Chain AM 138–285（148 aa） Fragment：residues 138-285
Chain AN 138–285（148 aa） Fragment：residues 138-285
Chain AO 138–285（148 aa） Fragment：residues 138-285
Chain AP 138–285（148 aa） Fragment：residues 138-285
Chain AQ 138–285（148 aa） Fragment：residues 138-285
Chain AR 138–285（148 aa） Fragment：residues 138-285
Chain AS 138–285（148 aa） Fragment：residues 138-285
Chain AT 138–285（148 aa） Fragment：residues 138-285
Chain AU 138–285（148 aa） Fragment：residues 138-285
Chain AV 138–285（148 aa） Fragment：residues 138-285
Chain AW 138–285（148 aa） Fragment：residues 138-285
Chain AX 138–285（148 aa） Fragment：residues 138-285
Chain AY 138–285（148 aa） Fragment：residues 138-285
Chain AZ 138–285（148 aa） Fragment：residues 138-285
Chain Aa 138–285（148 aa） Fragment：residues 138-285
Chain Ab 138–285（148 aa） Fragment：residues 138-285
Chain Ac 138–285（148 aa） Fragment：residues 138-285
Chain Ad 138–285（148 aa） Fragment：residues 138-285
Chain Ae 138–285（148 aa） Fragment：residues 138-285
Chain Af 138–285（148 aa） Fragment：residues 138-285
Chain Ag 138–285（148 aa） Fragment：residues 138-285
Chain Ah 138–285（148 aa） Fragment：residues 138-285
Chain Ai 138–285（148 aa） Fragment：residues 138-285
Chain Aj 138–285（148 aa） Fragment：residues 138-285
Chain Ak 138–285（148 aa） Fragment：residues 138-285
Chain Al 138–285（148 aa） Fragment：residues 138-285
Chain Am 138–285（148 aa） Fragment：residues 138-285
Chain An 138–285（148 aa） Fragment：residues 138-285
Chain Ao 138–285（148 aa） Fragment：residues 138-285
Chain Ap 138–285（148 aa） Fragment：residues 138-285
Chain Aq 138–285（148 aa） Fragment：residues 138-285
Chain Ar 138–285（148 aa） Fragment：residues 138-285
Chain As 138–285（148 aa） Fragment：residues 138-285
Chain At 138–285（148 aa） Fragment：residues 138-285
Chain Au 138–285（148 aa） Fragment：residues 138-285
Chain Av 138–285（148 aa） Fragment：residues 138-285
Chain Aw 138–285（148 aa） Fragment：residues 138-285
Chain Ax 138–285（148 aa） Fragment：residues 138-285
Not recorded MG MAGNESIUM ION × 40 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；sodium formate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 3.30 Å R-free 0.226
4ZCH Single-chain human APRIL-BAFF-BAFF Heterotrimer Deposited 2015-04-16 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 140–285（146 aa）
Not recorded 144 TRIS-HYDROXYMETHYL-METHYL-AMMONIUM × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；RESERVOIR SOLUTION : 14% PEG6000 , 1M LiCL , TRIS-HCL pH 8.50
Resolution 2.43 Å R-free 0.234
4ZCH Single-chain human APRIL-BAFF-BAFF Heterotrimer Deposited 2015-04-16 Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 140–285（146 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；RESERVOIR SOLUTION : 14% PEG6000 , 1M LiCL , TRIS-HCL pH 8.50
Resolution 2.43 Å R-free 0.234
5Y9J BAFF in complex with belimumab Deposited 2017-08-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 134–285（152 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.5；293 K；0.1 M Tris(hydroxymethyl)aminomethane pH 8.5, 20% (w/v)polyethylene glycol 1,000
Resolution 2.05 Å R-free 0.217
6FXN Crystal structure of human BAFF in complex with Fab fragment of anti-BAFF antibody belimumab Deposited 2018-03-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 134–285（152 aa）
Chain B 134–285（152 aa）
Chain C 134–285（152 aa）
Mutation：H218A Mutation：H218A Mutation：H218A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；9% (w/v) PEG4000, 0.1 M MgCl2, 0.1 M HEPES pH 7.5
Resolution 2.90 Å R-free 0.231
6FXN Crystal structure of human BAFF in complex with Fab fragment of anti-BAFF antibody belimumab Deposited 2018-03-09 Assembly 2 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain J 134–285（152 aa）
Chain K 134–285（152 aa）
Chain L 134–285（152 aa）
Mutation：H218A Mutation：H218A Mutation：H218A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；9% (w/v) PEG4000, 0.1 M MgCl2, 0.1 M HEPES pH 7.5
Resolution 2.90 Å R-free 0.231
8ZUJ Pentagonal cluster of BAFF-BAFFR ectodomain complex Deposited 2024-06-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 30 PDB declaration: 30-meric（30） Consistent with protein count
Chain D 134–285（152 aa）
Chain E 134–285（152 aa）
Chain F 134–285（152 aa）
Chain J 134–285（152 aa）
Chain K 134–285（152 aa）
Chain L 134–285（152 aa）
Chain P 134–285（152 aa）
Chain Q 134–285（152 aa）
Chain R 134–285（152 aa）
Chain V 134–285（152 aa）
Chain W 134–285（152 aa）
Chain X 134–285（152 aa）
Chain b 134–285（152 aa）
Chain c 134–285（152 aa）
Chain d 134–285（152 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.58 Å

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.