IUBMB Enzyme Nomenclature


Accepted name: β-methylindole-3-pyruvate reductase

Reaction: (2S,3R)-2-hydroxy-3-(indol-3-yl)butanoate + NAD+ = (R)-3-(indol-3-yl)-2-oxobutanoate + NADH + H+

Glossary: (R)-3-(indol-3-yl)-2-oxobutanoate = (R)-β-methylindole-3-pyruvate
(2S,3R)-2-hydroxy-3-(indol-3-yl)butanoate = indolmycenate

Other name(s): ind2 (gene name)

Systematic name: (2S,3R)-2-hydroxy-3-(indol-3-yl)butanoate:NAD+ oxidoreductase

Comments: The enzyme, characterized from the bacterium Streptomyces griseus, participates in the biosynthesis of indolmycin, an antibacterial drug that inhibits the bacterial tryptophan—tRNA ligase (EC

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Du, Y.L., Alkhalaf, L.M. and Ryan, K.S. In vitro reconstitution of indolmycin biosynthesis reveals the molecular basis of oxazolinone assembly. Proc. Natl. Acad. Sci. USA 112 (2015) 2717-2722. [PMID: 25730866]

[EC created 2016]

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