X-ray diffraction
3Å resolution

Crystal structure of a sigma54-activator suggests the mechanism for the conformational switch necessary for sigma54 binding


Function and Biology Details

Structure analysis Details

Assembly composition:
homo hexamer (preferred)
Entry contents:
1 distinct polypeptide molecule
Transcriptional regulatory protein ZraR Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 304 amino acids
Theoretical weight: 33.74 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium
Expression system: Escherichia coli
  • Canonical: P25852 (Residues: 141-441; Coverage: 68%)
Gene names: STM4174, STMF1.27, hydG, zraR
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-4
Spacegroup: P2221
Unit cell:
a: 107.44Å b: 114.74Å c: 187.26Å
α: 90° β: 90° γ: 90°
R R work R free
0.255 0.252 0.308
Expression system: Escherichia coli