CoA-transferase activity malonate CoA-transferase activity https://github.com/geneontology/go-ontology/issues/30193 RHEA:18817 malonate coenzyme A-transferase activity molecular_function MetaCyc:MALONATE-COA-TRANSFERASE-RXN KEGG_REACTION:R00743 GO:0050078 Catalysis of the reaction: acetyl-CoA + malonate = acetate + malonyl-CoA. acetyl-CoA:malonate CoA-transferase activity EC:2.8.3.3