6FY4 image
Entry Detail
PDB ID:
6FY4
Keywords:
Title:
Structure of human NAD(P) H:quinone oxidoreductase in complex with N-(2-bromophenyl)pyrrolidine-1-sulfonamide
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2018-03-10
Release Date:
2019-03-20
Method Details:
Experimental Method:
Resolution:
2.76 Å
R-Value Free:
0.29
R-Value Work:
0.21
R-Value Observed:
0.22
Space Group:
P 31 1 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:NAD(P)H dehydrogenase [quinone] 1
Chain IDs:A, B, C, D
Chain Length:274
Number of Molecules:4
Biological Source:Homo sapiens
Primary Citation
A small molecule chaperone rescues the stability and activity of a cancer-associated variant of NAD(P)H:quinone oxidoreductase 1 in vitro.
Febs Lett. 594 424 438 (2020)
PMID: 31605637 DOI: 10.1002/1873-3468.13636

Abstact

NAD(P)H:quinone oxidoreductase 1 (NQO1) is a human FAD-dependent enzyme that plays a crucial role in the antioxidant defense system. A naturally occurring single-nucleotide polymorphism (NQO1*2) in the NQO1 gene leads to an amino acid substitution (P187S), which severely compromises the activity and stability of the enzyme. The NQO1*2 genotype has been linked to a higher risk for several types of cancer and poor survival rate after anthracycline-based chemotherapy. In this study, we show that a small molecular chaperone (N-(2-bromophenyl)pyrrolidine-1-sulfonamide) repopulates the native wild-type conformation. As a consequence of the stabilizing effect, the enzymatic activity of the P187S variant protein is strongly improved in the presence of the molecular chaperone in vitro.

Legend

Protein

Chemical

Disease

Primary Citation of related structures