› 1irq

X-ray diffraction
1.5Å resolution

Crystal structure of omega transcriptional repressor at 1.5A resolution

Released:
DOI: 10.2210/pdb1irq/pdb
PDB entry 1irq coloured by chain, front view.
PDB entry 1irq coloured by chain, side view.
PDB entry 1irq coloured by chain, top view.
Source organism: Streptococcus pyogenes
Primary publication:
Crystal structure of omega transcriptional repressor encoded by Streptococcus pyogenes plasmid pSM19035 at 1.5 A resolution.
Murayama K, Orth P, de la Hoz AB, Alonso JC, Saenger W
J Mol Biol 314 789-96 (2001)
PMID: 11733997

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-176425 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Omega transcriptional repressor domain-containing protein Chains: A, B
Molecule details ›
Chains: A, B
Length: 71 amino acids
Theoretical weight: 8 KDa
Source organism: Streptococcus pyogenes
Expression system: Escherichia coli
UniProt:
  • Canonical: Q57468 (Residues: 1-71; Coverage: 100%)
Gene name: omega
Sequence domains: Omega Transcriptional Repressor
Structure domains: Met repressor-like

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: EMBL/DESY, HAMBURG BEAMLINE X11
Spacegroup: P61
Unit cell:
a: 46.1Å b: 46.1Å c: 88.3Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.211 0.211 0.232
Expression system: Escherichia coli

Quick links

Citations

9 review citations

Ribbon-helix-helix transcription factors: variations on a theme.
Schreiter et al. (2007)
8 more

10 mentions without citation

Simultaneous prediction of protein folding and docking at high resolution.
Das et al. (2009)
9 more