PDBe 1gu6

X-ray diffraction
2.5Å resolution

Structure of the Periplasmic Cytochrome c Nitrite Reductase from Escherichia coli


Function and Biology Details

Reaction catalysed:
NH(3) + 2 H(2)O + 6 ferricytochrome c = nitrite + 6 ferrocytochrome c + 7 H(+)
Biochemical function:
Biological process:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Cytochrome c-552 Chains: A, C, E, G
Molecule details ›
Chains: A, C, E, G
Length: 452 amino acids
Theoretical weight: 50.67 KDa
Source organism: Escherichia coli
  • Canonical: P0ABK9 (Residues: 27-478; Coverage: 100%)
Gene names: JW4031, b4070, nrfA
Sequence domains: Cytochrome c552
Structure domains:

Ligands and Environments

Cofactor: Ligand HEC 20 x HEC
2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-1
Spacegroup: P212121
Unit cell:
a: 81.472Å b: 90.837Å c: 293.874Å
α: 90° β: 90° γ: 90°
R R work R free
0.203 0.203 0.243