› 1wnx

X-ray diffraction
1.85Å resolution

D136E mutant of Heme Oxygenase from Corynebacterium diphtheriae (HmuO)

Released:
DOI: 10.2210/pdb1wnx/pdb
PDB entry 1wnx coloured by chain, front view.
PDB entry 1wnx coloured by chain, side view.
PDB entry 1wnx coloured by chain, top view.
Source organism: Corynebacterium diphtheriae
Primary publication:
Roles of distal Asp in heme oxygenase from Corynebacterium diphtheriae, HmuO: A water-driven oxygen activation mechanism.
Matsui T, Furukawa M, Unno M, Tomita T, Ikeda-Saito M
J Biol Chem 280 2981-9 (2005)
PMID: 15528205

Function and Biology Details

Reaction catalysed: 
Protoheme + 3 [reduced NADPH--hemoprotein reductase] + 3 O(2) = biliverdin + Fe(2+) + CO + 3 [oxidized NADPH--hemoprotein reductase] + 3 H(2)O
Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-159780 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Heme oxygenase Chains: A, B
Molecule details ›
Chains: A, B
Length: 215 amino acids
Theoretical weight: 24.18 KDa
Source organism: Corynebacterium diphtheriae
Expression system: Escherichia coli
UniProt:
  • Canonical: P71119 (Residues: 1-215; Coverage: 100%)
Gene names: DIP1669, hmuO
Sequence domains: Heme oxygenase
Structure domains: Heme oxygenase-like

Ligands and Environments


Cofactor: Ligand HEM 2 x HEM
2 bound ligands:
Ligand SO4 11 x SO4
Ligand NA 1 x NA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: PHOTON FACTORY BEAMLINE BL-6A
Spacegroup: C2
Unit cell:
a: 106.151Å b: 63.722Å c: 79.296Å
α: 90° β: 130.28° γ: 90°
R-values:
R R work R free
0.155 0.15 0.201
Expression system: Escherichia coli

Quick links

Citations

6 review citations

Heme oxygenase and heme degradation.
Kikuchi et al. (2005)
5 more