1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + CTP + H(+) <=> 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-cytidine-5'-diphosphate + diphosphate
1-hexadecanoyl-2-(5z,8z,11z,14z-eicosatetraenoyl)-sn-glycero-3-phosphate + ctp + h(+) <=> 1-hexadecanoyl-2-(5z,8z,11z,14z-eicosatetraenoyl)-sn-glycero-3-cytidine-5'-diphosphate + diphosphate