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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：P01837 New Search
26PDB entries
34Biological assembly
35chain/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
15C8 CATALYTIC ANTIBODY 5C8, FREE FAB Deposited 1998-03-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 24–235（212 aa） Fragment：FAB
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.5；pH 5.5
Resolution 2.50 Å R-free 0.251
1AHW A COMPLEX OF EXTRACELLULAR DOMAIN OF TISSUE FACTOR WITH AN INHIBITORY FAB (5G9) Deposited 1997-04-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–214（214 aa） Fragment：LIGHT CHAIN RESIDUES 1 - 214
Chain D 1–214（214 aa） Fragment：LIGHT CHAIN RESIDUES 1 - 214
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；TF-5G9 CRYSTAL WERE GROWN IN 1.7-2.0M AMMONIUM SULFATE, 0.1M SODIUM CITRATE, PH 5.0-5.5, 0.2% 2-METHYL-2,4-PENTANE-DIOL (MPD), AND 2% PEG 600 AT AN EQUIMOLAR 5G9:TF RATIO. THE CRYSTALS GREW EXTREMELY SLOWLY, TAKING 6-9 MONTHS TO REACH A MAXIMAL SIZE OF 0.4 X 0.4 X 0.8 MM3., pH 7.0
Resolution 3.00 Å R-free 0.285
1AIF ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB FROM MOUSE Deposited 1994-11-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–213（213 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.90 Å
1AIF ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB FROM MOUSE Deposited 1994-11-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–213（213 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.90 Å
1F11 F124 FAB FRAGMENT FROM A MONOCLONAL ANTI-PRES2 ANTIBODY Deposited 2000-05-18 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–106（106 aa） Fragment：FAB FRAGMENT (UNP P01665 residues 1-111, P01837 residues 1-106)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；290 K；PEG 400, sodium acetate, ammonium sulfate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Resolution 3.00 Å R-free 0.271
1F11 F124 FAB FRAGMENT FROM A MONOCLONAL ANTI-PRES2 ANTIBODY Deposited 2000-05-18 Assembly 2 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–106（106 aa） Fragment：FAB FRAGMENT (UNP P01665 residues 1-111, P01837 residues 1-106)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；290 K；PEG 400, sodium acetate, ammonium sulfate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Resolution 3.00 Å R-free 0.271
1FAI THREE-DIMENSIONAL STRUCTURE OF TWO CRYSTAL FORMS OF FAB R19.9, FROM A MONOCLONAL ANTI-ARSONATE ANTIBODY Deposited 1992-05-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.70 Å
1FSK COMPLEX FORMATION BETWEEN A FAB FRAGMENT OF A MONOCLONAL IGG ANTIBODY AND THE MAJOR ALLERGEN FROM BIRCH POLLEN BET V 1 Deposited 2000-09-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4；300 K；12% peg 6000, 0.1M sodium citrate, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.90 Å R-free 0.285
1FSK COMPLEX FORMATION BETWEEN A FAB FRAGMENT OF A MONOCLONAL IGG ANTIBODY AND THE MAJOR ALLERGEN FROM BIRCH POLLEN BET V 1 Deposited 2000-09-11 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain E 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4；300 K；12% peg 6000, 0.1M sodium citrate, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.90 Å R-free 0.285
1FSK COMPLEX FORMATION BETWEEN A FAB FRAGMENT OF A MONOCLONAL IGG ANTIBODY AND THE MAJOR ALLERGEN FROM BIRCH POLLEN BET V 1 Deposited 2000-09-11 Assembly 3 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain H 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4；300 K；12% peg 6000, 0.1M sodium citrate, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.90 Å R-free 0.285
1FSK COMPLEX FORMATION BETWEEN A FAB FRAGMENT OF A MONOCLONAL IGG ANTIBODY AND THE MAJOR ALLERGEN FROM BIRCH POLLEN BET V 1 Deposited 2000-09-11 Assembly 4 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain K 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4；300 K；12% peg 6000, 0.1M sodium citrate, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.90 Å R-free 0.285
1GPO CRYSTAL STRUCTURE OF THE RATIONALLY DESIGNED ANTIBODY M41 AS A FAB FRAGMENT Deposited 1997-03-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa） Fragment：FAB FRAGMENT
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；2.0 M AMMONIUM SULFATE, 5 % DMSO, 0.1 M CACODYLATE PH 6.5
Resolution 1.95 Å R-free 0.283
1GPO CRYSTAL STRUCTURE OF THE RATIONALLY DESIGNED ANTIBODY M41 AS A FAB FRAGMENT Deposited 1997-03-27 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain M 1–106（106 aa） Fragment：FAB FRAGMENT
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；2.0 M AMMONIUM SULFATE, 5 % DMSO, 0.1 M CACODYLATE PH 6.5
Resolution 1.95 Å R-free 0.283
1KB5 MURINE T-CELL RECEPTOR VARIABLE DOMAIN/FAB COMPLEX Deposited 1997-04-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain L 1–106（106 aa） Fragment：FAB
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.2；15% PEG6000, 100MM HEPES PH 6.9-7.5, 200MM NACL, 0.1% NAN3, pH 7.2
Resolution 2.50 Å
1KCR CRYSTAL STRUCTURE OF ANTIBODY PC283 IN COMPLEX WITH PS1 PEPTIDE Deposited 2001-11-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain L 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；300 K；18% PEG 3K, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.90 Å R-free 0.277
1KCS CRYSTAL STRUCTURE OF ANTIBODY PC282 IN COMPLEX WITH PS1 PEPTIDE Deposited 2001-11-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain L 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；300 K；20% PEG 8K, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.50 Å R-free 0.277
1KCU CRYSTAL STRUCTURE OF ANTIBODY PC287 Deposited 2001-11-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；300 K；15% PEG 8K, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.20 Å R-free 0.249
1KCV Crystal structure of antibody pc282 Deposited 2001-11-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；300 K；10 % PEG 3K, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 1.80 Å R-free 0.233
1LO0 Catalytic Retro-Diels-Alderase Transition State Analogue Complex Deposited 2002-05-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain X 1–106（106 aa） Fragment：Fab fragment
Not recorded BC1 3-{[(9-CYANO-9,10-DIHYDRO-10-METHYLACRIDIN-9-YL)CARBONYL]AMINO}PROPANOIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；290 K；PEG, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Resolution 2.00 Å R-free 0.255
1LO0 Catalytic Retro-Diels-Alderase Transition State Analogue Complex Deposited 2002-05-05 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa） Fragment：Fab fragment
Not recorded BC1 3-{[(9-CYANO-9,10-DIHYDRO-10-METHYLACRIDIN-9-YL)CARBONYL]AMINO}PROPANOIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；290 K；PEG, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Resolution 2.00 Å R-free 0.255
1MLB MONOCLONAL ANTIBODY FAB D44.1 RAISED AGAINST CHICKEN EGG-WHITE LYSOZYME Deposited 1995-03-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.10 Å R-free 0.274
1NBY Crystal Structure of HyHEL-63 complexed with HEL mutant K96A Deposited 2002-12-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；PEG 4000, AMMONIUM ACETATE, SODIUM ACETATE, pH 4.60, VAPOR DIFFUSION, HANGING DROP
Resolution 1.80 Å R-free 0.250
1NDG Crystal structure of Fab fragment of antibody HyHEL-8 complexed with its antigen lysozyme Deposited 2002-12-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–106（106 aa） Fragment：light chain
Not recorded ACY ACETIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP
Resolution 1.90 Å R-free 0.249
1NDM Crystal structure of Fab fragment of antibody HyHEL-26 complexed with lysozyme Deposited 2002-12-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–106（106 aa） Fragment：light chain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP
Resolution 2.10 Å R-free 0.258
1ORQ X-ray structure of a voltage-dependent potassium channel in complex with an Fab Deposited 2003-03-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 1–106（106 aa）
Not recorded CD CADMIUM ION × 28 K POTASSIUM ION × 24 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；293 K；PEG400, Cadmium chloride, Sodium acetate, pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 3.20 Å R-free 0.298
1ORQ X-ray structure of a voltage-dependent potassium channel in complex with an Fab Deposited 2003-03-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 24 PDB declaration: 24-meric（24） Consistent with protein count
Chain A 1–106（106 aa）
Not recorded CD CADMIUM ION × 56 K POTASSIUM ION × 48 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；293 K；PEG400, Cadmium chloride, Sodium acetate, pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 3.20 Å R-free 0.298
1ORS X-ray structure of the KvAP potassium channel voltage sensor in complex with an Fab Deposited 2003-03-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；PEG4000, Hepes, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.90 Å R-free 0.251
1PSK THE CRYSTAL STRUCTURE OF AN FAB FRAGMENT THAT BINDS TO THE MELANOMA-ASSOCIATED GD2 GANGLIOSIDE Deposited 1997-03-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa） Fragment：FAB
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；30% (W/V) PEG 4000, 1% MPD, TRIS BUFFER, PH 7.5
Resolution 2.80 Å R-free 0.326
25C8 CATALYTIC ANTIBODY 5C8, FAB-HAPTEN COMPLEX Deposited 1998-03-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 24–234（211 aa） Fragment：FAB
Not recorded GEP N-METHYL-N-(PARA-GLUTARAMIDOPHENYL-ETHYL)-PIPERIDINIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.5；pH 5.5
Resolution 2.00 Å R-free 0.292
2F19 THREE-DIMENSIONAL STRUCTURE OF TWO CRYSTAL FORMS OF FAB R19.9, FROM A MONOCLONAL ANTI-ARSONATE ANTIBODY Deposited 1992-05-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.80 Å
2MPA BACTERICIDAL ANTIBODY AGAINST NEISSERIA MENINGITIDIS Deposited 1999-06-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain L 8–106（99 aa） Fragment：FAB FRAGMENT
Not recorded CD CADMIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；THE MN12H2 FAB PEPTIDE COMPLEX WAS CRYSTALLIZED FROM 15% W/V PEG 20000, 100 MM SODIUM ACETATE, PH 4.6, 20 MM CDCL2, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.264
4ZXB Structure of the human insulin receptor ectodomain, IRDeltabeta construct, in complex with four Fab molecules Deposited 2015-05-20 Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain B 1–106（106 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；Crystals were produced by vapour diffusion using 1 microlitre of the complex (2.6 mg/ml) in 10 mM HEPES (pH 7.5), 0.02% sodium azide and 10% D-trehalose solution and 1 microlitres of well solution containing 10% PEG 8000, 0.1 M MES (pH 6.5) and 0.1 M MgAc2.
Resolution 3.30 Å R-free 0.237
6FAB THREE-DIMENSIONAL STRUCTURE OF MURINE ANTI-P-AZOPHENYLARSONATE FAB 36-71. 1. X-RAY CRYSTALLOGRAPHY, SITE-DIRECTED MUTAGENESIS, AND MODELING OF THE COMPLEX WITH HAPTEN Deposited 1991-01-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 1–106（106 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.90 Å
8XKK Ckappa domain of mouse immunoglobulin Deposited 2023-12-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–106（105 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) Not defined；Pressure 1
NMR sample composition 1.6 mM [U-13C; U-15N] Ckappa domain of mouse immunoglobulin, 5 mM NaPi, 50 mM sodium chloride, 95% H2O/5% D2O | 95% H2O/5% D2O
NMR sample composition 1.6 mM [U-13C; U-15N] Ckappa domain of mouse immunoglobulin, 95% H2O/5% D2O | 95% H2O/5% D2O
NMR sample composition 1.6 mM [U-13C; U-15N] Ckappa domain of mouse immunoglobulin, 95% H2O/5% D2O | 95% H2O/5% D2O
Resolution not provided

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.