| steroid 5a-reductase | <enzyme> An enzyme that uses NADPH to reduce certain steroids (e.g., the conversion of testosterone to dihydrotestosterone a deficiency of this enzyme is associated with a form of male pseudohermaphroditism in which genetic males have male genitals as well as female external genitalia. (05 Mar 2000) |
|---|---|
| N-hydroxy-2-acetylaminofluorene reductase | <enzyme> Dehydroxylates n-hydroxy-2-acetylaminofluorene to 2-acetylaminofluorene; can use cysteine, glutathione, dithiothreitol, 2-mercaptoeethanol, NADPH or NADH as electron donor Registry number: EC 1.14.99.- Synonym: n-hydroxy-aaf reductase (26 Jun 1999) |
| nitrate reductase | <enzyme> Narg, narh, nari, and narj are subunits of membrane-bound nitrate reductase from denitrifying bacteria Registry number: EC 1.7.99.4 Synonym: respiratory nitrate reductase, nasb gene product, narb gene product, niad gene product, narg gene product, narh gene product, nari gene product, narj gene product (26 Jun 1999) |
| nitric acid reductase | <enzyme> Found in pseudomonas stutzerie; transforms nitric oxide to nitrous oxide in an ascorbate-phenazine methosulfate-dependent reaction; not EC 1.7.99.2 Registry number: EC 1.7.99.- (26 Jun 1999) |
| nitric-oxide reductase | <enzyme> Prior to 1992 was classified as EC 1.7.99.2; a cytochrome bc complex; genbank af002217 (norb protein) and af002661 (norz protein) are from alcaligenes eutrophus Registry number: EC 1.7.99.7 Synonym: nitric oxide reductase, norb gene product, norz gene product (26 Jun 1999) |
| nitroacetophenone reductase | <enzyme> Reduces keto group, requires NADPH Registry number: EC 1.1.1.- (26 Jun 1999) |
| nitrogenase reductase | <enzyme> Fe protein component of mo-fe protein nitrogenase in rhodospirillum rubrum; part of the molybdenum nitrogenase which is nifhdk Registry number: EC 1.18.2.- Synonym: nitrogenase iron protein, nitrogenase fe protein, fe protein, nitrogenase, nifh protein, nifh gene product (26 Jun 1999) |
| nitroglycerin reductase | <enzyme> Pseudomonas fmn-containing enzyme that catalyses NADPH-dependent denitration of nitroglycerin, yielding nitrite Registry number: EC 1.7.99.- (26 Jun 1999) |
| nitrophenol reductase | <enzyme> Catalyses the conversion of 2,4-dinitrophenol to 2-amino-4-nitrophenol Registry number: EC 1.6.6.- (26 Jun 1999) |
| succinate saemialdehyde reductase | <enzyme> Nadp dependent Registry number: EC 1.1.1.- Synonym: sucinate saemialdehyde reductase (nadp) (26 Jun 1999) |
| sulfide quinone reductase | <enzyme> Part of the photosynthetic electron transport chain in chlorobium; reaction occurs in the dark, in the absence of oxygen Registry number: EC 1.8.5.- Synonym: plastoquinone reductase, sulfide-quinone oxidoreductase, sqr enzyme, sulfide-quinone reductase (26 Jun 1999) |
| sulfoxide reductase | <enzyme> Nadph or dithiothreitol can act as reducing agent; reduces sulindac to the corresponding sulfide Registry number: EC 1.8.- (26 Jun 1999) |
| sulfur oxygenase reductase | <enzyme> From desulfurolobus ambivalens; in the presence of oxygen but not under a hydrogen atmosphere simultaneously produces sulfite, thiosulfate, and hydrogen sulfide from sulfur; inhibited by sulfhydryl reagents, fad, ferrous and ferric ions Registry number: EC 1.8.- Synonym: sor gene product (sulfur oxygenase reductase) (26 Jun 1999) |
| dehydrocholic acid reductase | <enzyme> Catalyses the conversion of dehydrocholic acid to 3-hydroxy-7,12-dioxocholanoic acid; isolated from the cytosol of red blood cells Registry number: EC 1.1.1.- Synonym: dhca reductase (26 Jun 1999) |
| dehydrodolichol reductase | <enzyme> Nadph-dependent reductase from rat liver microsomes; forms dolichol from dehydrodolichol Registry number: EC 1.3.1.- (26 Jun 1999) |