Originally it was thought essential only for infants. It has now been shown to be essential for adults also. It is encoded by the codons CAU and CAC.
Reflist[change | change source]
- Kopple J.D. & Swendseid M.E. 1975. Evidence that histidine is an essential amino acid in normal and chronically uremic man. Journal of Clinical Investigation. 55 (5): 881–91. doi:10.1172/JCI108016. PMC 301830. PMID 1123426
- Vickery, Hubert Bradford; Leavenworth, Charles S. (1928-08-01). "On the Separation of Histidine and Arginine" (PDF). Journal of Biological Chemistry. 78 (3): 627–635. doi:10.1016/S0021-9258(18)83967-9. ISSN 0021-9258