Choline/ethanolaminephosphotransferase 1
Cytidine triphosphate + O-Phosphoethanolamine → CDP-ethanolamine + Pyrophosphate
Phosphatidylserine decarboxylase proenzyme
Phosphatidylethanolamine Biosynthesis PE(22:0/16:0)
Ethanolamine-phosphate cytidylyltransferase
Adenosine triphosphate + Ethanolamine → Adenosine diphosphate + Hydrogen Ion + O-Phosphoethanolamine
CDP-ethanolamine + DG(22:0/16:0/0:0) → Cytidine monophosphate + PE(22:0/16:0)