PDBe 4eji

X-ray diffraction
2.1Å resolution

Human Cytochrome P450 2A13 in complex with two molecules of 4-(methylnitrosamino)-1-(3-puridyl)-1-butanone


Function and Biology Details

Reaction catalysed:
RH + [reduced NADPH--hemoprotein reductase] + O(2) = ROH + [oxidized NADPH--hemoprotein reductase] + H(2)O
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Cytochrome P450 2A13 Chain: A
Molecule details ›
Chain: A
Length: 476 amino acids
Theoretical weight: 54.8 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: Q16696 (Residues: 31-494; Coverage: 94%)
Gene name: CYP2A13
Sequence domains: Cytochrome P450
Structure domains: Cytochrome P450

Ligands and Environments

Cofactor: Ligand HEM 1 x HEM
1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: I422
Unit cell:
a: 122.807Å b: 122.807Å c: 194.213Å
α: 90° β: 90° γ: 90°
R R work R free
0.203 0.201 0.236
Expression system: Escherichia coli