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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：P01867 New Search
9PDB entries
13Biological assembly
19chain/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
1CIC IDIOTOPE-ANTI-IDIOTOPE FAB-FAB COMPLEX; D1.3-E225 Deposited 1999-03-31 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–217（217 aa） Fragment：FAB IMMUNOGLOBULIN FRAGMENT
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.9；12% PEG 800, 75 MILLIMOLAR SODIUM ACETATE PH 4.85 10MGM/ML PROTEIN CONCENTRATION , pH 4.9
Resolution 2.50 Å
1HQ4 STRUCTURE OF NATIVE CATALYTIC ANTIBODY HA5-19A4 Deposited 2000-12-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–99（99 aa） Fragment：VARIABLE REGIONS OF FAB LIGHT AND HEAVY CHAINS
Not recorded CD CADMIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；298 K；PEG 6000, cadmium chloride, hepes, ph 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.265
1HQ4 STRUCTURE OF NATIVE CATALYTIC ANTIBODY HA5-19A4 Deposited 2000-12-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 1–99（99 aa） Fragment：VARIABLE REGIONS OF FAB LIGHT AND HEAVY CHAINS
Not recorded CD CADMIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；298 K；PEG 6000, cadmium chloride, hepes, ph 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.265
1MAM CRYSTAL STRUCTURE TO 2.45 A RESOLUTION OF A MONOCLONAL FAB SPECIFIC FOR THE BRUCELLA A CELL WALL POLYSACCHARIDE ANTIGEN Deposited 1992-01-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–98（98 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.45 Å
1NBV AN AUTOANTIBODY TO SINGLE-STRANDED DNA: COMPARISON OF THE THREE-DIMENSIONAL STRUCTURES OF THE UNLIGANDED FAB AND A DEOXYNUCLEOTIDE-FAB COMPLEX Deposited 1993-03-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 1–98（98 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1OSP CRYSTAL STRUCTURE OF OUTER SURFACE PROTEIN A OF BORRELIA BURGDORFERI COMPLEXED WITH A MURINE MONOCLONAL ANTIBODY FAB Deposited 1996-11-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain H 1–98（98 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.95 Å R-free 0.295
2RGS FC-fragment of monoclonal antibody IGG2B from Mus musculus Deposited 2007-10-05 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 117–334（218 aa） Fragment：Fc-fragment
Chain B 117–334（218 aa） Fragment：Fc-fragment
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；301 K；20% PEG2000, 0.1 M HEPES pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 301K
Resolution 2.13 Å R-free 0.213
5UBX Crystal structure of a mutant mIgG2b Fc heterodimer in complex with Protein A peptide analog Z34C Deposited 2016-12-21 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 108–335（228 aa） Fragment：UNP residues 108-335
Chain B 108–335（228 aa） Fragment：UNP residues 108-335
Mutation：P307T, Q309L, V370K, K409R Mutation：I253D, F405L No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；293 K；17% PEG 3350, 0.2 M LiCl, 0.1 M Tris, pH 8.0
Resolution 2.70 Å R-free 0.257
6KRU Crystal structure of mouse IgG2b Fc Deposited 2019-08-22 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 117–334（218 aa）
Chain B 117–334（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；16% PEG3350, 0.2 M lithium chloride, and 0.1 M Bis-Tris (pH 6.5)
Resolution 2.30 Å R-free 0.237
6KRU Crystal structure of mouse IgG2b Fc Deposited 2019-08-22 Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 117–334（218 aa）
Chain D 117–334（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；16% PEG3350, 0.2 M lithium chloride, and 0.1 M Bis-Tris (pH 6.5)
Resolution 2.30 Å R-free 0.237
6KRU Crystal structure of mouse IgG2b Fc Deposited 2019-08-22 Assembly 3 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 117–334（218 aa）
Chain F 117–334（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；16% PEG3350, 0.2 M lithium chloride, and 0.1 M Bis-Tris (pH 6.5)
Resolution 2.30 Å R-free 0.237
6KRV Crystal structure of mouse IgG2b Fc complexed with B domain of Protein A Deposited 2019-08-22 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 117–334（218 aa）
Chain B 117–334（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；60% (v/v) Tacsimate (pH 7.0)
Resolution 3.30 Å R-free 0.250
6KRV Crystal structure of mouse IgG2b Fc complexed with B domain of Protein A Deposited 2019-08-22 Assembly 2 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 117–334（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；60% (v/v) Tacsimate (pH 7.0)
Resolution 3.30 Å R-free 0.250

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.