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NQO1 - NAD(P)H dehydrogenase, quinone 1
Entrez Gene Name: NAD(P)H dehydrogenase, quinone 1
Synonyms: AV001255, DHQU, DIA4, DTD, MGC93075, NAD(P)H dehydrogenase, quinone 1, Nadph dehydrogenase, NADPH DIAPHORASE, Nadph Quinone Oxidoreductase-1, Nadph-d, NMO1, NMOR1, NMORI, Nqo, NQO1, Ox-1, QR1, Quinone reductase

Gene Summary

  • Human (1728): This gene is a member of the NAD(P)H dehydrogenase (quinone) family and encodes a cytoplasmic 2-electron reductase. This FAD-binding protein forms homodimers and reduces quinones to hydroquinones. This protein's enzymatic activity prevents the one electron reduction of quinones that results in the production of radical species. Mutations in this gene have been associated with tardive dyskinesia (TD), an increased risk of hematotoxicity after exposure to benzene, and susceptibility to various forms of cancer. Altered expression of this protein has been seen in many tumors and is also associated with Alzheimer's disease (AD). Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq]
  • Rat (24314): enzyme that acts as an antioxidant; involved in increasing neuronal damage after injury [RGD]

Cell Regulation

Regulates:
  • TP53
  • NAD+
  • NADPH
View all 43 in IPA
Regulated by:
  • NFE2L2
  • tert-butyl-hydroquinone
  • tetrachlorodibenzodioxin
View all 139 in IPA
Binds:
  • MAFG
  • NFE2L2
  • MAFK
View all 16 in IPA
Role in cell:
  • apoptosis
  • quantity
  • cell death
View all 9 in IPA
Disease:
  • tumorigenesis
  • cancer
  • neoplasia
View all 13 in IPA

Biological Process

negative regulation of catalytic activity, nitric oxide biosynthetic process, oxidation reduction, positive regulation of neuron apoptosis, response to oxidative stress, response to toxin, synaptic transmission, cholinergic, xenobiotic metabolic process

Cellular Components

cytoplasm

Literature References

  • 17545619Gong X, Kole L, Iskander K, Jaiswal AK. NRH:Quinone Oxidoreductase 2 and NAD(P)H:Quinone Oxidoreductase 1 Protect Tumor Suppressor p53 against 20S Proteasomal Degradation Leading to Stabilization and Activation of p53.Cancer Res 2007 Jun 01;67(11):5380-8
  • 17360324Liu Y, Kern JT, Walker JR, Johnson JA, Schultz PG, Luesch H. A genomic screen for activators of the antioxidant response element.Proc Natl Acad Sci U S A 2007 Mar 20;104(12):5205-10
  • 16920990Wan J, Diaz-Sanchez D. Phase II Enzymes Induction Blocks the Enhanced IgE Production in B Cells by Diesel Exhaust Particles.J Immunol 2006 Sep 01;177(5):3477-83
  • View 700 categorized literature findings and their references in IPA

Molecular Functions

coenzyme binding, cytochrome-b5 reductase activity, electron carrier activity, NAD(P)H dehydrogenase (quinone) activity, oxidoreductase activity

Protein Domains

Cytochrome-b5 reductase, enzyme, NAD(P)H2 dehydrogenase (quinone)

Subcellular Locations

axons, cell body, cytoplasm, cytosol, nucleus