Involved in the catabolism of oxalate and in the adapatation to low pH via the induction of the oxalate-dependent acid tolerance response (ATR). Catalyzes the transfer of the CoA moiety from formyl-CoA to oxalate. It can also use succinate as an acceptor. formyl-CoA + oxalate = formate + oxalyl-CoA formyl-CoA + succinate = formate + succinyl-CoA kcat is 130 sec(-1) for CoA-transferase activity with formyl-CoA as substrate (with oxalate as acceptor at pH 6.7 and 30 degrees Celsius). kcat is 5.3 sec(-1) for CoA-transferase activity with formyl-CoA as substrate (with succinate as acceptor at pH 6.7 and 30 degrees Celsius). Metabolic intermediate degradation; oxalate degradation; CO(2) and formate from oxalate: step 1/2. Homodimer. By the acid response regulator EvgA. Cells lacking this gene show a reduced acid tolerance response (ATR) during the adaptation phase. However the deletion of YfdW has no effect on survival in oxalate-containing challenge medium. Belongs to the CoA-transferase III family. Frc subfamily.