3-methylbut-2-enoyl-CoA + hydrogencarbonate + ATP <=> 3-methyl-(2E)-glutaconyl-CoA + ADP + phosphate + H(+)
3-methylbut-2-enoyl-coa + hydrogencarbonate + atp <=> 3-methyl-(2e)-glutaconyl-coa + adp + phosphate + h(+)