. "Catalysis of the reaction: cis-2-methyl-5-isopropylhexa-2,5-dienoic acid + ATP + CoASH = cis-2-methyl-5-isopropylhexa-2,5-dienoyl-CoA + AMP + PPi." . . . "cis-2-methyl-5-isopropylhexa-2,5-dienoate-CoA ligase activity" . .