Polyprenol reductase

Polyprenol reductase (EC 1.3.1.94, SRD5A3 (gene), DFG10 (gene)) is an enzyme with systematic name ditrans,polycis-dolichol:NADP⁺ 2,3-oxidoreductase.[1][2] This enzyme catalyses the following chemical reaction

ditrans, polycis-dolichol + NADP⁺

\rightleftharpoons

ditrans, polycis-polyprenol + NADPH + H⁺

The reaction occurs in the reverse direction.

References

Sagami H, Kurisaki A, Ogura K (May 1993). "Formation of dolichol from dehydrodolichol is catalyzed by NADPH-dependent reductase localized in microsomes of rat liver". The Journal of Biological Chemistry. 268 (14): 10109–13. PMID 8486680.
Cantagrel V, Lefeber DJ, Ng BG, Guan Z, Silhavy JL, Bielas SL, Lehle L, Hombauer H, Adamowicz M, Swiezewska E, De Brouwer AP, Blümel P, Sykut-Cegielska J, Houliston S, Swistun D, Ali BR, Dobyns WB, Babovic-Vuksanovic D, van Bokhoven H, Wevers RA, Raetz CR, Freeze HH, Morava E, Al-Gazali L, Gleeson JG (July 2010). "SRD5A3 is required for converting polyprenol to dolichol and is mutated in a congenital glycosylation disorder". Cell. 142 (2): 203–17. doi:10.1016/j.cell.2010.06.001. PMC 2940322. PMID 20637498.

Polyprenol+reductase at the US National Library of Medicine Medical Subject Headings (MeSH)

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Oxidoreductases: CH–CH oxidoreductases (EC 1.3)
1.3.1: NAD/NADP acceptor	Enoyl-acyl carrier protein reductase/Enoyl ACP reductase 7-Dehydrocholesterol reductase Biliverdin reductase 2,4 Dienoyl-CoA reductase Dihydroxymethyloxo-tetrahydroquinoline dehydrogenase
1.3.3: Oxygen acceptor	Dihydroorotate dehydrogenase Coproporphyrinogen III oxidase Protoporphyrinogen oxidase Bilirubin oxidase Acyl-CoA oxidase Dihydrouracil oxidase Tetrahydroberberine oxidase Secologanin synthase Tryptophan alpha,beta-oxidase Pyrroloquinoline-quinone synthase L-galactonolactone oxidase
1.3.5: Quinone	Succinate dehydrogenase SDHA SDHB SDHC SDHD
1.3.99: Other acceptors	Fumarate reductase Butyryl-CoA dehydrogenase Acyl CoA dehydrogenase ACADSB ACADS 5α-reductase SRD5A1 SRD5A2 SRD5A3 Glutaryl-CoA dehydrogenase Isovaleryl coenzyme A dehydrogenase 3-oxo-5beta-steroid 4-dehydrogenase

Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)