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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：P13380 New Search
3PDB entries
3Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
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
1AN8 CRYSTAL STRUCTURE OF THE STREPTOCOCCAL SUPERANTIGEN SPE-C Deposited 1997-06-27 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 28–235（208 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；PROTEIN WAS CRYSTALLIZED FROM 2.7 M AMMONIUM SULFATE IN 0.1 M TRIS/HCL BUFFER AT PH 8.0
Resolution 2.40 Å R-free 0.210
1HQR CRYSTAL STRUCTURE OF A SUPERANTIGEN BOUND TO THE HIGH-AFFINITY, ZINC-DEPENDENT SITE ON MHC CLASS II Deposited 2000-12-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain D 28–235（208 aa）
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298.15 K；Ammonium sulfate, PEG 400, sodium cacodylate, ZnCl, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.15K
Resolution 3.20 Å R-free 0.288
1KTK Complex of Streptococcal pyrogenic enterotoxin C (SpeC) with a human T cell receptor beta chain (Vbeta2.1) Deposited 2002-01-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 28–235（208 aa）
Chain B 28–235（208 aa）
Chain C 28–235（208 aa）
Chain D 28–235（208 aa）
Mutation：H35A Mutation：H35A Mutation：H35A Mutation：H35A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；298 K；15% PEG 8000, 0.2 M MgCl2, pH 8.0, VAPOR DIFFUSION, HANGING DROP at 298K
Resolution 3.00 Å R-free 0.334

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.