N(6)-(2E)-butenoyl-L-lysyl-[protein] + CoA + H(+) => (2E)-butenoyl-CoA + L-lysyl-[protein]
n(6)-(2e)-butenoyl-l-lysyl-[protein] + coa + h(+) => (2e)-butenoyl-coa + l-lysyl-[protein]
N(6)-(2E)-butenoyl-L-lysyl-[protein] + CoA + H(+) => (2E)-butenoyl-CoA + L-lysyl-[protein]
n(6)-(2e)-butenoyl-l-lysyl-[protein] + coa + h(+) => (2e)-butenoyl-coa + l-lysyl-[protein]