ketol-acid reductoisomerase (NADP+) EC#: 1.1.1.86; ChemWhat Code: 1373114
| Product Name | ketol-acid reductoisomerase (NADP+) |
| Example Structure |  |
| Synonyms | 2-hydroxy-3-keto acid reductoisomerase, acetohydroxy acid isomeroreductase, acetohydroxy acid reductoisomerase, acetohydroxy-acid isomeroreductase , acetohydroxy-acid reductoisomerase , acetohydroxyacid isomeroreductase, acetolactate reductoisomerase, AHAIR, AHIR, alpha-keto-beta-hydroxylacil reductoisomerase, alpha-keto-beta-hydroxylacyl reductoisomerase, class II ketol-acid reductoisomerase, dehydrogenase, dihydroxyisovalerate (isomerizing), dihydroxyisovalerate dehydrogenase (isomerizing), Icl1p, Ilv5p, ilvC, IlvC-PanE, IlvC1, IlvC2, isomerase, ketol acid reducto-, isomeroreductase, KARI, ketol-acid reductoisomerase, reductoisomerase |
| EC Number | 1.1.1.86 |
| CAS Registry Number | 9075/2/9 |
| Comments | Also catalyses the reduction of 2-ethyl-2-hydroxy-3-oxobutanoate to 2,3-dihydroxy-3-methylpentanoate. The enzyme, found in many bacteria and archaea, is specific for NADPH (cf. EC 1.1.1.382, ketol-acid reductoisomerase (NAD+) and EC 1.1.1.383, ketol-acid reductoisomerase [NAD(P)+]). |
| Cofactor | |
| History | |
| Reactions | (1) (2R)-2,3-dihydroxy-3-methylbutanoate + NADP(+) = (2S)-2-hydroxy-2- methyl-3-oxobutanoate + Nadph. (2) (2R,3R)-2,3-dihydroxy-3-methylpentanoate + NADP(+) = (S)-2-hydroxy-2- ethyl-3-oxobutanoate + Nadph |
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