› 1dbq

X-ray diffraction
2.2Å resolution

DNA-BINDING REGULATORY PROTEIN

Released:
DOI: 10.2210/pdb1dbq/pdb
PDB entry 1dbq coloured by chain, front view.
PDB entry 1dbq coloured by chain, side view.
PDB entry 1dbq coloured by chain, top view.
Source organism: Escherichia coli
Primary publication:
Mechanism of corepressor-mediated specific DNA binding by the purine repressor.
Schumacher MA, Choi KY, Lu F, Zalkin H, Brennan RG
Cell 83 147-55 (1995)
PMID: 7553867

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-142291 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
HTH-type transcriptional repressor PurR Chains: A, B
Molecule details ›
Chains: A, B
Length: 289 amino acids
Theoretical weight: 32.49 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0ACP7 (Residues: 53-341; Coverage: 85%)
Gene names: JW1650, b1658, purR
Sequence domains: Periplasmic binding protein-like domain
Structure domains: Rossmann fold

Ligands and Environments

1 bound ligand:
Ligand MG 3 x MG
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P21
Unit cell:
a: 38.04Å b: 125.26Å c: 61.29Å
α: 90° β: 100.17° γ: 90°
R-values:
R R work R free
0.156 0.156 not available

Quick links

Citations

12 review citations

The structure and function of glutamate receptor ion channels.
Madden DR. (2002)
11 more

3 mentions without citation

Allostery: absence of a change in shape does not imply that allostery is not at play.
Tsai et al. (2008)
2 more