6.3.4.9 biotin---[methylmalonyl-CoA-carboxytransferase] ligase; biotin-[methylmalonyl-CoA-carboxyltransferase] synthetase; biotin-methylmalonyl coenzyme A carboxyltransferase synthetase; biotin-transcarboxylase synthetase; methylmalonyl coenzyme A holotrans • • •