Phosphatidylethanolamine
（重定向自Phosphatidyl ethanolamine）
![Biosynthesis of Phophatidylethanolamine in Bacteria](/Images/godic/202502/02/Biosynthesis_of_phosphatidylglycerol,_phosphatidylserine,_and_phosphatidylethanolamine.svg4412.png")
![The major membrane lipidsPtdCho - Phosphatidylcholine; PtdEtn - Phosphatidylethanolamine;PtdIns -Phosphatidylinositol; PtdSer - Phosphatidylserine.](/Images/godic/202502/02/Membrane_lipids4412.png")
Phosphatidylethanolamines (sometimes abbreviated PE) are a class of phospholipids found in biological membranes. They are synthesized by the addition of CDP-ethanolamine to diglycerides, releasing CMP. S-Adenosyl methionine can subsequently methylate the amine of phosphatidylethanolamines to yield phosphatidylcholines. It can mainly be found in the inner (cytoplasmic) leaflet of the lipid bilayer.