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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：P0A9G8 New Search
2PDB entries
2Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification 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
1B9M REGULATOR FROM ESCHERICHIA COLI Deposited 1999-02-12 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–262（262 aa）
Chain B 1–262（262 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) NI NICKEL (II) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；pH 6.5
Resolution 1.75 Å R-free 0.279
1B9N REGULATOR FROM ESCHERICHIA COLI Deposited 1999-02-12 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–262（262 aa）
Chain B 1–262（262 aa）
Not recorded NI NICKEL (II) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；pH 6.5
Resolution 2.09 Å R-free 0.286

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.