Cystine is formed from
The difference in structure of cysteine and cystine. Two molecules of cysteine are joined together by S--S bond to form one molecule of cystine.Ref: M.N. Chatterjea - Textbook of Biochemistry, 8th edition, page no: 504
Arginine
Histidine
Cysteine
Alanine
Metabolism of protein and amino acid