| dihydrobiopterin reductase | <enzyme> An enzyme that catalyses the reduction of 6,7-dihydropteridine to 5,6,7,8-tetrahydropteridine. Chemical name: NAD(P)H:6,7-dihydropteridine oxidoreductase Registry number: EC 1.6.99.7 (12 Dec 1998) |
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| dihydroflavanol 4-reductase | <enzyme> Isolated from flowers of dahlia varibilis; requires NADPH as a cofactor; catalyses the transfer of pro-s hydrogen of NADPH to the substrate; pH optima 6.0 for flavanones and 6.8 for dihydroflavonols Registry number: EC 1.1.1.- Synonym: 3-hydroxyflavanone 4-reductase, dhf reductase, dihydroflavonol-4-reductase, dihydroflavanol reductase (26 Jun 1999) |
| dihydrofolate reductase | <enzyme> An enzyme involved in the biosynthesis of folic acid coenzymes, that transfers hydrogen from NADP to dihydrofolate, yielding tetrahydrofolic acid. Inhibitors can be used as antimicrobial and anticancer drugs. Standard source is liver and the enzyme is used to assay dihydrofolate. (18 Nov 1997) |
| dihydropteridine reductase | <enzyme> An enzyme that catalyses the reduction of 6,7-dihydropteridine to 5,6,7,8-tetrahydropteridine. Chemical name: NAD(P)H:6,7-dihydropteridine oxidoreductase Registry number: EC 1.6.99.7 (12 Dec 1998) |
| dihydroxyphenylacetic acid reductase | <enzyme> Converts dihydroxyphenyl acetic acid to dihydroxyphenylethanol Registry number: EC 1.- Synonym: dopac reductase (26 Jun 1999) |
| diiodophenylpyruvate reductase | <enzyme> Chemical name: 2-oxo acid reductase Registry number: EC 1.1.1.96 Synonym: aromatic ketoacid reductase (26 Jun 1999) |
| dimethyl sulfoxide reductase | <enzyme> From anaerobically grown E coli; reduced fmn and fad or methyl viologen can serve as electron donors Registry number: EC 1.8.99.- Synonym: dimethylsulfoxide reductase, dmso reductase, dora gene product (26 Jun 1999) |
| dinitrogenase reductase | A non-haem iron-sulfur protein isolated from clostridium pasteurianum and other bacteria. It is a component of nitrogenase along with molybdoferredoxin and is active in nitrogen fixation. (12 Dec 1998) |
| dinitrogenase reductase ADP-ribosyltransferase | <enzyme> Catalyses the ADP-ribosylation and concomitant inactivation of dinitrogenase reductase in rhodospirillum rubrum; encoded by drat gene of azospirillum brasilense Registry number: EC 2.4.2.- Synonym: dratransferase (26 Jun 1999) |
| d-proline reductase | An oxidoreductase reversibly reacting d-proline with NADH to produce 5-aminovalerate and NAD+. (05 Mar 2000) |
| D-ribose reductase | <enzyme> Ribose is converted to ribitol Registry number: EC 1.1.- (26 Jun 1999) |
| dTDP-4-dehydrorhamnose reductase | <enzyme> Catalyses 4th step in dtdp-rhamnose biosynthesis from glucose-1-phosphate; amino acid sequence has been determined; genbank ab000631 Registry number: EC 1.1.1.133 Synonym: dtdp-4-keto-l-rhamnose reductase, rmld gene product (26 Jun 1999) |
| D-xylulose reductase | <enzyme> Chemical name: xylitol nad 2-oxidoreductase (d-xylulose-forming) Registry number: EC 1.1.1.9 Synonym: xylitol dehydrogenase (26 Jun 1999) |
| imipramine N-oxide reductase | <enzyme> Reduces imipramine n-oxide to imipramine in the presence of menaquinone Registry number: EC 1.7.99.- (26 Jun 1999) |
| QH2 cytochrome C reductase | <enzyme> Membrane bound complex in the mitochondrial inner membrane, responsible for electron transfer from reduced coenzyme Q to cytochrome C. Contains cytochromes b and c1 and iron sulphur proteins. (18 Nov 1997) |