ID 2.7.2.14 DE branched-chain-fatty-acid kinase. AN isobutyrate kinase. CA 2-methylpropanoate + ATP = 2-methylpropanoyl phosphate + ADP. CC -!- 3-methylbutanoate, 2-methylbutanoate, pentanoate, butanoate, CC and propanoate can also act as acceptors (cf. EC 2.7.2.7). //