X-ray diffraction
2.4Å resolution

Crystal structure of sigm54 activator (AAA+ ATPase) in the inactive state


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Sigma-54-dependent Fis family transcriptional regulator Chains: A, B
Molecule details ›
Chains: A, B
Length: 387 amino acids
Theoretical weight: 44.3 KDa
Source organism: Aquifex aeolicus
Expression system: Escherichia coli
  • Canonical: O67198 (Residues: 1-387; Coverage: 88%)
Gene names: aq_1117, ntrC1
Sequence domains:
Structure domains:

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.2
Spacegroup: P3221
Unit cell:
a: 94.765Å b: 94.765Å c: 195.01Å
α: 90° β: 90° γ: 120°
R R work R free
0.213 0.213 0.257
Expression system: Escherichia coli