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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：R9HWB4 New Search
1PDB entries
1Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
No difference found in parsed fields

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
9XC8 Crystal structure of Bacteroides uniformis O-acetyltransferase Deposited 2025-10-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–219（219 aa）
Chain B 1–219（219 aa）
Chain C 1–219（219 aa）
Not recorded BTB 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M BIS-TRIS pH 6.5, 25% w/v Polyethylene glycol 3,350
Resolution 1.59 Å R-free 0.209

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.