<prompt> Creatine is made up of all, exceptGlycineAlanineMethionineArginine  <response>: Three amino acids are required in the biosynthesis of creatine. They are: i Glycine ii Arginine and iii Methionine Substrates to sta synthesis are Glycine and Arginine. Site: Site of synthesis In kidney In liverRef: Textbook of medical biochemistry, MN Chatterji, 8th edition, page no: 524 