L-serine is an amino acid which is vital in the development and functioning of the central nervous system (1) and is also synthesised by glycine (2) and threonine (3).
1 – Tabatabaie, L., Klomp, L. W., Berger, R., & de Koning, T. J. (2010). L-serine synthesis in the central nervous system: a review on serine deficiency disorders. Molecular genetics and metabolism, 99(3), 256-262.
2 – Shemin, D. (1946). The biological conversion of L-serine to glycine. Journal of Biological Chemistry, 162(2), 297-307.
3 – Garg, H. G., Von Dem Bruch, K., & Kunz, H. (1993). Developments in the synthesis of glycopeptides containing glycosyl L-asparagine, L-serine, and L-threonine. Advances in carbohydrate chemistry and biochemistry, 50, 277-310