the biosynthesis of choline from serine and related compounds* by david elwyn,t arthur weissbachj sarah s. henry, and david b. sprinson Department of Horticulture and Landscape Architecture . of choline synthesis. In higher plants, choline is derived from the amino acid serine. Phosphatidylserine is biosynthesized in bacteria by condensing the amino acid serine with CDP (cytidine diphosphate)-activated phosphatidic acid. [21] A pathway for phosphatidylcholine biosynthesis in Plasmodium. serine, inositol, choline). the CDP–choline is not the sole route for synthesis of PtdCho. The Saccharomyces cerevisiae CKI1-encoded choline kinase catalyzes the committed step in phosphatidylcholine synthesis via the Kennedy pathway. THE SYNTHESIS OF CHOLINE AND CREATINE IN RATS. tion of either the a-carbon of glycine or the P-carbon of serine for the synthesis of both moieties of choline. Neither glycerylphosphoryl choline nor free serine are. that proposed by AGRANOFF et al.5 for the bio- synthesis of phosphatidyl inositol is unlikely to. Choline is a water-soluble nutrient. [1] [2] [3] [4] [5] It is usually grouped within the B-complex vitamins. It is used in the synthesis of components in cell. Lecithin vs. Phosphatidylserine vs Choline? - posted in Brain Health: To all you in the know, which of these is best to take, or is it beneficial to take all 3 together? The synthesis of glycine and serine by the rat. H. R. V. Arnstein and A. Neuberger. Author information Copyright and License information This.