X-ray diffraction
2.45Å resolution

X-ray Crystal structure of NAD(P)H: Quinone Oxidoreductase-1 (NQO1) bound to the coumarin-based inhibitor AS1


Function and Biology Details

Reaction catalysed:
NAD(P)H + a quinone = NAD(P)(+) + a hydroquinone
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
NAD(P)H dehydrogenase [quinone] 1 Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 273 amino acids
Theoretical weight: 30.78 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P15559 (Residues: 2-274; Coverage: 100%)
Gene names: DIA4, NMOR1, NQO1
Sequence domains: Flavodoxin-like fold
Structure domains: Rossmann fold

Ligands and Environments

Cofactor: Ligand FAD 8 x FAD
1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I02
Spacegroup: P21
Unit cell:
a: 70.04Å b: 209.94Å c: 102.08Å
α: 90° β: 109.93° γ: 90°
R R work R free
0.21 0.206 0.269
Expression system: Escherichia coli