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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：P01863 New Search
11PDB entries
15Biological assembly
17chain/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
1GGI CRYSTAL STRUCTURE OF AN HIV-1 NEUTRALIZING ANTIBODY 50.1 IN COMPLEX WITH ITS V3 LOOP PEPTIDE ANTIGEN Deposited 1993-04-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain H 1–107（107 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.80 Å
1GGI CRYSTAL STRUCTURE OF AN HIV-1 NEUTRALIZING ANTIBODY 50.1 IN COMPLEX WITH ITS V3 LOOP PEPTIDE ANTIGEN Deposited 1993-04-02 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain J 1–107（107 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.80 Å
1IGT STRUCTURE OF IMMUNOGLOBULIN Deposited 1996-10-25 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–326（326 aa）
Chain D 1–326（326 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；291 K；7 MICROLITERS OF 4.3 MG/ML MAB231, 3 MICROLITERS 50 MILLIMOLAR TRIS PH 8.0, AND 7 MICROLITERS 4% PEG 3350 EQUILIBRATED AGAINST 25 ML RESERVOIRS OF 4% PEG 3350, AT 18 DEGREE CELSIUS (SANDWICH PLATE)., temperature 291K
Resolution 2.80 Å R-free 0.297
1YEC STRUCTURE OF A CATALYTIC ANTIBODY IGG2A FAB FRAGMENT (D2.3) Deposited 1997-04-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 PNB 4-NITRO-BENZYLPHOSPHONOBUTANOYL-GLYCINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7.0
Resolution 1.90 Å R-free 0.252
1YEC STRUCTURE OF A CATALYTIC ANTIBODY IGG2A FAB FRAGMENT (D2.3) Deposited 1997-04-15 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 PNB 4-NITRO-BENZYLPHOSPHONOBUTANOYL-GLYCINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7.0
Resolution 1.90 Å R-free 0.252
1YEF STRUCTURE OF IGG2A FAB FRAGMENT (D2.3) COMPLEXED WITH SUBSTRATE ANALOGUE Deposited 1997-05-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 8 PNC PARA-NITROBENZYL GLUTARYL GLYCINIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；HANGING DROP METHOD. PRECIPITANT: 30% (W/V) PEG 600, 100MM CACODYLATE PH7.5, 40MM ZN ACETATE., vapor diffusion - hanging drop
Resolution 2.00 Å R-free 0.248
1YEG STRUCTURE OF IGG2A FAB FRAGMENT (D2.3) COMPLEXED WITH REACTION PRODUCT Deposited 1997-05-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 BPN PARANITROBENZYL ALCOHOL × 1 ACT ACETATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；HANGING DROP METHOD. PRECIPITANT: 30% (W/V) PEG 600, 100MM CACODYLATE PH7.5, 40MM ZN ACETATE., vapor diffusion - hanging drop
Resolution 2.00 Å R-free 0.240
1YEG STRUCTURE OF IGG2A FAB FRAGMENT (D2.3) COMPLEXED WITH REACTION PRODUCT Deposited 1997-05-29 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 BPN PARANITROBENZYL ALCOHOL × 1 ACT ACETATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；HANGING DROP METHOD. PRECIPITANT: 30% (W/V) PEG 600, 100MM CACODYLATE PH7.5, 40MM ZN ACETATE., vapor diffusion - hanging drop
Resolution 2.00 Å R-free 0.240
1YEH STRUCTURE OF IGG2A FAB FRAGMENT Deposited 1997-05-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；HANGING DROP METHOD. PRECIPITANT: 35% (W/V) PEG 600, 100MM CACODYLATE PH7.5, 40MM ZN ACETATE., vapor diffusion - hanging drop
Resolution 2.55 Å R-free 0.231
1YEH STRUCTURE OF IGG2A FAB FRAGMENT Deposited 1997-05-29 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–99（99 aa）
Not recorded ZN ZINC ION × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；HANGING DROP METHOD. PRECIPITANT: 35% (W/V) PEG 600, 100MM CACODYLATE PH7.5, 40MM ZN ACETATE., vapor diffusion - hanging drop
Resolution 2.55 Å R-free 0.231
3OZ9 Crystal Structure of anti-gp41 Fab NC-1 Deposited 2010-09-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–100（100 aa）
Not recorded GOL GLYCEROL × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；1.13M sodium citrate, 0.1M sodium borate, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 1.60 Å R-free 0.233
3ZO0 Mouse IgG2a in complex with mouse TRIM21 PRYSPRY Deposited 2013-02-19 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 120–327（208 aa） Fragment：FC, RESIDUES 120-327
Not recorded MAN alpha-D-mannopyranose × 2 FUC alpha-L-fucopyranose × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.99 Å R-free 0.253
5VAA Crystal structure of mouse IgG2a Fc T370K mutant Deposited 2017-03-24 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 107–330（224 aa） Fragment：UNP residues 107-330
Chain B 107–330（224 aa） Fragment：UNP residues 107-330
Mutation：T370K Mutation：T370K GOL GLYCEROL × 3 MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；40% (w/v) PEG 200, 0.1 M MES, pH 6.5
Resolution 1.55 Å R-free 0.195
8AQW BA.4/5 SARS-CoV-2 Spike bound to mouse ACE2 (local) Deposited 2022-08-13 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 98–330（233 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9RBQ Semliki Forest virus trimer 1 in complex with ApoER2 LA5 Deposited 2025-05-27 Assembly 1 Insufficient information Heteromer；Protein × 13 PDB declaration: 13-meric（13） Consistent with protein count
Chain A 99–330（232 aa）
Not recorded CA CALCIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 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.