Post-translational modifications of proteins may include which of the following processes?
A) removal of introns
B) addition of a 5′ cap
C) synthesis of peptide bonds
D) addition of carbohydrates to form a glycoprotein

Question

Quizplus · Accepted Answer

Post-translational modifications refer to changes made to proteins after they have been synthesized. The addition of carbohydrates to form a glycoprotein is an example of such a modification. Removal of introns (A) occurs during RNA processing, not on proteins. Addition of a 5′ cap (B) also occurs on mRNA, not proteins. Synthesis of peptide bonds (C) occurs during protein synthesis, not as a post-translational modification.

Post-Translational Modifications of Proteins May Include Which of the Following