› 1h9x

X-ray diffraction
2.1Å resolution

Cytochrome cd1 Nitrite Reductase, reduced form

Released:
DOI: 10.2210/pdb1h9x/pdb
PDB entry 1h9x coloured by chain, front view.
PDB entry 1h9x coloured by chain, side view.
PDB entry 1h9x coloured by chain, top view.
Source organism: Paracoccus pantotrophus
Primary publication:
The Structure of an alternative form of Paracoccus pantotrophus cytochrome cd(1) nitrite reductase.
Sjögren T, Hajdu J
J Biol Chem 276 29450-5 (2001)
PMID: 11373294

Function and Biology Details

Reactions catalysed: 
Nitric oxide + H(2)O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H(+)
NH(3) + H(2)O + acceptor = hydroxylamine + reduced acceptor
Biochemical function:
Biological process:
  • not assigned
Cellular component:
Sequence domains:
Structure domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-159836 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nitrite reductase Chains: A, B
Molecule details ›
Chains: A, B
Length: 567 amino acids
Theoretical weight: 62.55 KDa
Source organism: Paracoccus pantotrophus
UniProt:
  • 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 2 x HEC
2 bound ligands:
Ligand NHE 1 x NHE
Ligand SO4 3 x SO4
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: MAX II BEAMLINE I711
Spacegroup: P43212
Unit cell:
a: 127.97Å b: 127.97Å c: 264.13Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.216 0.216 0.241

Quick links

Citations

2 review citations

How to make a living from anaerobic ammonium oxidation.
Kartal et al. (2013)
1 more

1 mention without citation

Direct Electron Transfer of Enzymes Facilitated by Cytochromes.
Ma et al. (2019)