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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：P31391 New Search
2PDB entries
2Biological assembly
2chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion 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
7XMS CryoEM structure of somatostatin receptor 4 (SSTR4) in complex with Gi1 and its endogeneous ligand SST-14 Deposited 2022-04-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain R 2–328（327 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
7XMT CryoEM structure of somatostatin receptor 4 (SSTR4) with Gi1 and J-2156 Deposited 2022-04-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain R 2–328（327 aa）
Not recorded I8B (2~{S})-2-[[(2~{S})-4-azanyl-2-[(4-methylnaphthalen-1-yl)sulfonylamino]butanoyl]amino]-3-phenyl-propanimidic acid × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 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.