X-ray diffraction
1.6Å resolution

Cytochrome cd1 Nitrite Reductase, CO complex


Function and Biology Details

Reactions catalysed:
NH(3) + H(2)O + acceptor = hydroxylamine + reduced acceptor
Nitric oxide + H(2)O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H(+)
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Nitrite reductase Chains: A, B
Molecule details ›
Chains: A, B
Length: 567 amino acids
Theoretical weight: 62.55 KDa
Source organism: Paracoccus pantotrophus
  • Canonical: P72181 (Residues: 30-596; Coverage: 100%)
Gene name: nirS
Sequence domains:
Structure domains:

Ligands and Environments

Cofactor: Ligand DHE 2 x DHE

Cofactor: Ligand HEC 1 x HEC
3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-3
Spacegroup: P21
Unit cell:
a: 106.94Å b: 61.04Å c: 100.39Å
α: 90° β: 111.77° γ: 90°
R R work R free
0.178 0.178 0.199