3d image of phospholipid-peg-nh2 skeletal formula

phospholipid-peg-nh2 dspe-peg-nh2 3d metabolite metabolism biosynthesis cycle mechanism pathway path catabolism biosynthetic intermediate biogenesis substrate precursor synthesis derivative bioprecursor metabolic enzyme endogenous contractor phosphatidylcholine pc lecithin sphingomyelin phosphatidylethanolamine phospholipid membrane choline cell arachidonic acid lipid phosphocholine cholesterol fatty ceramide lysophosphatidylcholine bilayer surfactant glycerophospholipid phosphatidylserine lipophilic molecule molecular formula skeletal