IUBMB Enzyme Nomenclature


Accepted name: branched-chain-fatty-acid kinase

Reaction: ATP + 2-methylpropanoate = ADP + 2-methylpropanoyl phosphate

Other name(s): isobutyrate kinase

Systematic name: ATP:branched-chain-fatty-acid 1-phosphotransferase

Comments: 3-Methylbutanoate, 2-methylbutanoate, pentanoate, butanoate and propanoate can also act as acceptors (cf. EC butyrate kinase).

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 84177-54-8


1. Harwood, C.S. and Canale-Parola, E. Properties of acetate kinase isozymes and a branched-chain fatty acid kinase from a spirochete. J. Bacteriol. 152 (1982) 246-254. [PMID: 6288660]

[EC created 1990]

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