6.2.1.12 ATP + 4-coumarate + CoA = AMP + diphosphate + 4-coumaroyl-CoA - - 6.2.1.12 ATP + 4-coumarate + CoA = AMP + diphosphate + 4-coumaroyl-CoA bi uni uni bi ping pong mechanism, catalytic reaction scheme and kinetics, overview 728481