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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：P33681 New Search
6PDB entries
8Biological assembly
24chain/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
1DR9 CRYSTAL STRUCTURE OF A SOLUBLE FORM OF B7-1 (CD80) Deposited 2000-01-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 35–234（200 aa） Fragment：EXTRACELLULAR REGION
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；PEG400, Na Hepes, CaCl2, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 20K
Resolution 3.00 Å R-free 0.280
1I8L HUMAN B7-1/CTLA-4 CO-STIMULATORY COMPLEX Deposited 2001-03-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 35–242（208 aa） Fragment：EXTRACELLULAR DOMAIN, RESIDUES 35-242
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 9 MAN alpha-D-mannopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；298 K；16% PEG 8000, 0.1M CACODYLATE, PH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Resolution 3.00 Å R-free 0.257
1I8L HUMAN B7-1/CTLA-4 CO-STIMULATORY COMPLEX Deposited 2001-03-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 35–242（208 aa） Fragment：EXTRACELLULAR DOMAIN, RESIDUES 35-242
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 9 MAN alpha-D-mannopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；298 K；16% PEG 8000, 0.1M CACODYLATE, PH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Resolution 3.00 Å R-free 0.257
7TPS Crystal structure of ALPN-202 (engineered CD80 vIgD) in complex with PD-L1 Deposited 2022-01-26 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 35–140（106 aa）
Mutation：H52Y, A60E, E69D, M81L, V102M, A105G, D124G NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；0.03 M sodium nitrate, 0.03 M sodium phosphate dibasic, 0.03 M ammonium sulfate, 0.1 M sodium HEPES/MOPS (acid), pH 7.5, 20% v/v glycerol, 10% w/v PEG 4000
Resolution 3.15 Å R-free 0.291
7TPS Crystal structure of ALPN-202 (engineered CD80 vIgD) in complex with PD-L1 Deposited 2022-01-26 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 35–140（106 aa）
Mutation：H52Y, A60E, E69D, M81L, V102M, A105G, D124G NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；0.03 M sodium nitrate, 0.03 M sodium phosphate dibasic, 0.03 M ammonium sulfate, 0.1 M sodium HEPES/MOPS (acid), pH 7.5, 20% v/v glycerol, 10% w/v PEG 4000
Resolution 3.15 Å R-free 0.291
8FXW Cryo-EM structure of cowpox virus M2 in complex with human B7.1 (hexameric ring) Deposited 2023-01-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain C 35–235（201 aa）
Chain E 35–235（201 aa）
Chain G 35–235（201 aa）
Chain H 35–235（201 aa）
Chain J 35–235（201 aa）
Chain L 35–235（201 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 18 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；150 mM Nacl, 25 mM HEPES, pH7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
8FXZ Cryo-EM structure of cowpox virus M2 in complex with human B7.1 (heptameric ring) Deposited 2023-01-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric（14） Consistent with protein count
Chain C 35–235（201 aa）
Chain E 35–235（201 aa）
Chain G 35–235（201 aa）
Chain H 35–235（201 aa）
Chain J 35–235（201 aa）
Chain L 35–235（201 aa）
Chain N 35–235（201 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；150 mM Nacl, 25 mM HEPES, pH7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.86 Å
8HXA Cryo-EM structure of MPXV M2 in complex with human B7.1 Deposited 2023-01-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain G 35–234（200 aa）
Chain H 35–234（200 aa）
Chain I 35–234（200 aa）
Chain J 35–234（200 aa）
Chain K 35–234（200 aa）
Chain L 35–234（200 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.04 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.