Disulphide bond is seen between: (A) Arginine and histidine, (B) Arginine and cysteine, (C) Cysteine and cysteine, (D) Lysine and cysteine
Answer is C. Disulphide bonds: These are formed between two cysteine residues. They are strong, high energy covalent bonds.Ref: Textbook of medical biochemistry, MN Chatterji, 8th edition, page no: 89