Malonate--CoA ligase that catalyzes the formation of malonyl-CoA directly from malonate and CoA. May be required for the detoxification of malonate. ATP + CoA + malonate = AMP + diphosphate + malonyl-CoA Optimum pH is 6.5-8.0. Expressed in flowers. By abscisic acid (ABA) and osmotic stress. Strong defects in growth and development and most of the plants die before flowering. Viable plants have a greatly reduced seed set with a low proportion of viable seed and accumulate malonate and succinate. Plants overexpressing AAE13 show increased sensitivity to exogenous malonate. Belongs to the ATP-dependent AMP-binding enzyme family. Truncated N-terminus. Truncated N-terminus.