7.2.4.4 ? x * 14000, SDS-PAGE of subunit acyl carrier protein 685053 7.2.4.4 ? x * 67000, SDS-PAGE, subunit acetyl-S-acyl carrier protein: malonate acyl carrier protein-SH transferase 684745 7.2.4.4 additional information the genes encoding components of the malonate decarboxylase enzyme system are located within a gene cluster of about 11 kb comprizing 14 genes that have been termed madYZGBAECDHKFLMN. MadA represents the acyl-carrier-protein-transferase component, MadB is the integral membrane-bound carboxybiotin protein decarboxylase, MadC and MadD are the two subunits of the carboxyltransferase, MadE is the acyl carrier protein and MadF is the biotin protein 686491