Multiple choice

Which of the following plays the crucial role in the tertiary structure of the protein?

  1. Disulfide bonds

  2. Fatty acids

  3. Esters

  4. Hemiacetals

  5. Peptide bonds

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A Correct answer
Explanation

A disulfide bond (Br.E. disulphide bond) is a covalent bond, usually derived by the coupling of two thiol groups. The linkage is also called an SS-bond or disulfide bridge. The overall connectivity is therefore R–S–S–R. The terminology is widely used in biochemistry.