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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：A0A0H3AMP4 New Search
2PDB entries
2Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
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
9Y9W Vibrio cholerae protein FrhA peptid-binding domain and adjacent split domain (S1127-F1439) in complex with peptide AGWTD X-ray crystallography structure Deposited 2025-09-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric（12） Consistent with protein count
Chain A 1119–1460（342 aa）
Chain B 1119–1460（342 aa）
Chain E 1119–1460（342 aa）
Chain G 1119–1460（342 aa）
Chain I 1119–1460（342 aa）
Chain K 1119–1460（342 aa）
Not recorded CA CALCIUM ION × 36 PEG DI(HYDROXYETHYL)ETHER × 2 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions MICROBATCH；pH 9；293 K；0.16 M calcium acetate, 0.08 M sodium cacodylate, and 24.4% (w/v) PEG 8000. Ethylene glycol was used as a cryoprotectant.
Resolution 2.40 Å R-free 0.232
9YBQ Vibrio cholerae protein FrhA peptid-binding domain and adjacent split domain (S1127-F1439) in complex with peptide AGYTD X-ray crystallography structure Deposited 2025-09-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric（12） Consistent with protein count
Chain A 1119–1460（342 aa）
Chain B 1119–1460（342 aa）
Chain E 1119–1460（342 aa）
Chain G 1119–1460（342 aa）
Chain I 1119–1460（342 aa）
Chain K 1119–1460（342 aa）
Not recorded CA CALCIUM ION × 36 X-RAY DIFFRACTION
X-ray crystallization conditions MICROBATCH；pH 9；293 K；0.16 M calcium acetate, 0.08 M sodium cacodylate, and 24.4% (w/v) PEG 8000. Ethylene glycol was used as a cryoprotectant.
Resolution 2.50 Å R-free 0.252

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.