Protein Information

Name diaphorase
Synonyms Diaphorase; DHQU; DIA 4; DIA4; DT diaphorase; DTD; Diaphorase (NADH/NADPH); Diaphorase (NADH/NADPH) (cytochrome b 5 reductase)…

Compound Information

Name sodium arsenite
CAS sodium arsenenite

Reference List

PubMed Abstract RScore(About this table)
11979426 Seubert JM, Webb CD, Bend JR: Acute sodium arsenite treatment induces Cyp2a5 but not Cyp1a1 in the C57Bl/6 mouse in a tissue (kidney) selective manner. J Biochem Mol Toxicol. 2002;16(2):96-106.

Modulation of hepatic and extrahepatic detoxication enzymes Cyp1a1, Cyp2a5, glutathione S-transferse Ya (GSTYa) and NAD (P) H:quinone oxidoreductase (QOR) dependent catalytic activity and mRNA levels were investigated at 1, 2, or 4 days in liver, lung, or kidney of male, adult CD57 Bl/6 mice treated sc with a single dose (85 micromol/kg) of sodium arsenite (As3+).
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18474416 Elbekai RH, El-Kadi AO: Arsenite and cadmium, but not chromium, induce NAD (P) H:quinone oxidoreductase 1 through transcriptional mechanisms, in spite of post-transcriptional modifications. Toxicol In Vitro. 2008 Aug;22(5):1184-90. Epub 2008 Mar 31.


NAD (P) H:quinone oxidoreductase (Nqo1)-mediated detoxification of quinones plays a critical role in cancer prevention.
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3896786 Pinto MC, Mata AM, Lopez-Barea J: The redox interconversion mechanism of Saccharomyces cerevisiae glutathione reductase. Eur J Biochem. 1985 Sep 2;151(2):275-81.


The glutathione reductase and transhydrogenase activities were similarly inactivated by NADPH and reactivated by GSH, while the diaphorase activity remained unaltered during redox interconversion of glutathione reductase.
1(0,0,0,1) Details
9238525 Kitamura S, Tatsumi K: Menadione-dependent reduction of tertiary amine N-oxide by rat liver cytosol. Biochem Mol Biol Int. 1997 Jun;42(2):271-6.


Menadione is converted to its reduced form by a menadione-reducing enzyme such as DT-diaphorase and the reduced pyridine nucleotide, followed by reduction of the tertiary amine N-oxide to the amine by the heme group of catalytic hemoproteins in the presence of reduced menadione as an electron donor.
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9143318 Marcinkeviciene J, Blanchard JS: Catalytic properties of lipoamide dehydrogenase from Mycobacterium smegmatis. Arch Biochem Biophys. 1997 Apr 15;340(2):168-76.


The lipoamide-reducing reaction was reversibly inactivated by sodium arsenite, but no decrease in diaphorase activity was observed under these conditions.
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