Retinol dehydrogenase 5

Definition:

Catalyzes the oxidation of cis-isomers of retinol, including 11-cis-, 9-cis-, and 13-cis-retinol in an NAD-dependent manner. Has no activity towards all-trans retinal (By similarity). Plays a significant role in 11-cis retinol oxidation in the retinal pigment epithelium cells (RPE). Also recognizes steroids (androsterone, androstanediol) as its substrates.

References:

[1]. M Lidén, et al. Biochemical defects in 11-cis-retinol dehydrogenase mutants associated with fundus albipunctatus. J Biol Chem. 2001 Dec 28;276(52):49251-7. [Content Brief]

[2]. Michael V Fiandalo, et al. Inhibition of dihydrotestosterone synthesis in prostate cancer by combined frontdoor and backdoor pathway blockade. Oncotarget. 2018 Jan 10;9(13):11227-11242. [Content Brief]

[3]. J Wang, et al. Activity of human 11-cis-retinol dehydrogenase (Rdh5) with steroids and retinoids and expression of its mRNA in extra-ocular human tissue. Biochem J. 1999 Feb 15;338 ( Pt 1)(Pt 1):23-7. [Content Brief]

[4]. M V Gamble, et al. Biochemical properties, tissue expression, and gene structure of a short chain dehydrogenase/ reductase able to catalyze cis-retinol oxidation. J Lipid Res. 1999 Dec;40(12):2279-92. [Content Brief]

[5]. J R Mertz, et al. Identification and characterization of a stereospecific human enzyme that catalyzes 9-cis-retinol oxidation. A possible role in 9-cis-retinoic acid formation. J Biol Chem. 1997 May 2;272(18):11744-9. [Content Brief]

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