Multiple choice

Which of the following statements is true?

  1. Both cytosolic and extracellular proteins have similar amount of disulphide bonds.

  2. Cytosolic proteins lack disulphide bonds, whereas extracellular proteins have more disulphide bonds.

  3. Extracellular proteins lack disulphide bonds, whereas cytosolic proteins have more disulphide bonds.

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cytosol is a reducing environment whereas the extracellular milieu is an oxidising environment. Disulphide bonds are formed as a result of oxidation of thiol group and it requires an oxidising environment.

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