Which of the following is NOT posttranslational processing?
A) Adding polysaccharide side chains to proteins
B) Joining 2 or more amino acid chains
C) Conversion of a pro-protein to a functional protein
D) Removal of introns from pre-mRNA
E) Conversion of a pro-enzyme to a functional enzyme

Question

Quizplus · Accepted Answer

Posttranslational processing refers to the modifications that proteins undergo after they have been synthesized (translated) on ribosomes. This includes adding polysaccharide chains (A), forming complex structures by joining amino acid chains (B), and converting inactive forms of proteins and enzymes into their active forms (C and E). Removal of introns from pre-mRNA (D) is a process called splicing, which occurs during RNA processing before translation, not posttranslationally.

Which of the Following Is NOT Posttranslational Processing