2.3.1.39 malonyl transferase domain of EC 2.3.1.85: refolding in vitro of the recombinant protein expressed in E. coli. A shortened transacylase, consisting of EC 2.3.1.85 residues 488-409 can be repeatedly denatured and renatured in vitro with reproducible high recovery and no loss in specific activity 486896 2.3.1.39 of the mutant proteins R606A and R606K 486873