has participant hydron L-serine zwitterion 3-sn-phosphatidyl-L-serine(1-) CDP-diacylglycerol(2-) cytidine 5'-monophosphate(2-) CDP-diacylglycerol-serine O-phosphatidyltransferase activity phosphatidylserine synthase activity cytidine diphosphoglyceride-serine O-phosphatidyltransferase activity EC:2.7.8.8 CDP-diacylglycerol:L-serine 3-O-phosphatidyltransferase activity CDPdiacylglycerol-serine O-phosphatidyltransferase activity GO:0003882 CDP-diacylglycerol-L-serine O-phosphatidyltransferase activity MetaCyc:PHOSPHASERSYN-RXN serine exchange enzyme CDP-diglyceride-L-serine phosphatidyltransferase activity PS synthase activity CDPdiglyceride-serine O-phosphatidyltransferase activity CDP-diglycerine-serine O-phosphatidyltransferase activity RHEA:16913 phosphatidylserine synthetase activity cytidine 5'-diphospho-1,2-diacyl-sn-glycerol:L-serine O-phosphatidyltransferase activity cytidine 5'-diphospho-1,2-diacyl-sn-glycerol (CDPdiglyceride):L-serine O-phosphatidyltransferase activity Catalysis of the reaction: CDP-diacylglycerol + L-serine = CMP + O-sn-phosphatidyl-L-serine. CDP-diglyceride:serine phosphatidyltransferase activity molecular_function CDP-alcohol phosphatidyltransferase activity