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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：P0A1J5 New Search
3PDB entries
4Biological assembly
24chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state 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
2D4Y Crystal structure of a 49K fragment of HAP1 (FlgK) Deposited 2005-10-25 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 65–526（462 aa） Fragment：FK49
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；289 K；14-15% PEG 8000, 20-25% isopropanol, 0.1M citrate, pH 5.5, VAPOR DIFFUSION, temperature 289K
Resolution 2.10 Å R-free 0.255
2D4Y Crystal structure of a 49K fragment of HAP1 (FlgK) Deposited 2005-10-25 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 65–526（462 aa） Fragment：FK49
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；289 K；14-15% PEG 8000, 20-25% isopropanol, 0.1M citrate, pH 5.5, VAPOR DIFFUSION, temperature 289K
Resolution 2.10 Å R-free 0.255
9U4R Structure of the intial complex in filament assembly at 3.23 angstroms resolution, conformation 2. Deposited 2025-03-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 73 PDB declaration: 73-meric（73） Consistent with protein count
Chain CA 1–553（553 aa）
Chain CB 1–553（553 aa）
Chain CC 1–553（553 aa）
Chain CD 1–553（553 aa）
Chain CE 1–553（553 aa）
Chain CF 1–553（553 aa）
Chain CG 1–553（553 aa）
Chain CH 1–553（553 aa）
Chain CI 1–553（553 aa）
Chain CJ 1–553（553 aa）
Chain CK 1–553（553 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.23 Å
9U7Y Structure of the tip region of the intial complex in bacterial flagellar filament assembly at 3.68 angstroms resolution, conformation 3. Deposited 2025-03-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 60 PDB declaration: 60-meric（60） Consistent with protein count
Chain CA 1–553（553 aa）
Chain CB 1–553（553 aa）
Chain CC 1–553（553 aa）
Chain CD 1–553（553 aa）
Chain CE 1–553（553 aa）
Chain CF 1–553（553 aa）
Chain CG 1–553（553 aa）
Chain CH 1–553（553 aa）
Chain CI 1–553（553 aa）
Chain CJ 1–553（553 aa）
Chain CK 1–553（553 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.68 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.