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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：P27951 New Search
3PDB entries
5Biological assembly
5chain/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
5WAH SOLUTION NMR STRUCTURE OF SIGLEC-5 BINDING DOMAIN FROM STREPTOCOCCAL BETA PROTEIN Deposited 2017-06-26 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 92–189（98 aa） Fragment：UNP residues 92-189
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.5；298 K；Ionic strength (raw mmCIF value) 130；Pressure 1
NMR sample composition 0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
6V3P The BIgI domain of beta protein from S. agalactiae bound to CEACAM1 Deposited 2019-11-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 428–540（113 aa）
Not recorded SO4 SULFATE ION × 4 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；1.7M Ammonium Sulfate, 0.1M Sodium Citrate, pH 5.5
Resolution 3.25 Å R-free 0.244
6V3P The BIgI domain of beta protein from S. agalactiae bound to CEACAM1 Deposited 2019-11-26 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 428–540（113 aa）
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；1.7M Ammonium Sulfate, 0.1M Sodium Citrate, pH 5.5
Resolution 3.25 Å R-free 0.244
9MN2 Crystal Structure of the B6C Region of the Group B Streptococcus Beta Antigen C Protein Deposited 2024-12-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 258–427（170 aa） Fragment：residues 258-427
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M citric acid (pH 3.7), 34% (v/v) PEG-200
Resolution 2.05 Å R-free 0.274
9MN2 Crystal Structure of the B6C Region of the Group B Streptococcus Beta Antigen C Protein Deposited 2024-12-20 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 258–427（170 aa） Fragment：residues 258-427
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M citric acid (pH 3.7), 34% (v/v) PEG-200
Resolution 2.05 Å R-free 0.274

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.