The given structure of protein is maintained by which of the following bonds?
Correct answer: D. Hydrogen bonds, ionic bonds and disulphide bonds
- A. Hydrogen bonds only
- B. Hydrogen bonds and ionic bonds only
- C. Hydrogen bonds , ionic bonds and hydrophobic interactions
- D. Hydrogen bonds, ionic bonds and disulphide bonds
Explanation
In addition to hydrogen bonds and ionic bonds, disulfide bonds are another important type of bond involved in maintaining the tertiary structure of proteins. Disulfide bonds form between two cysteine residues through oxidation of their sulfhydryl (-SH) groups. These covalent bonds provide stability and structural integrity to the protein, particularly in extracellular proteins exposed to an oxidizing environment. Disulfide bonds can significantly affect the folding and functional properties of proteins.
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