Which of the following is not an example of posttranslational modification?
A) phosphorylation
B) polyadenylation
C) glycosylation
D) ubiquitination
E) acetylation

Question

Quizplus · Accepted Answer

Polyadenylation is a co-transcriptional modification that adds a string of adenine nucleotides to the 3' end of mRNA molecules. This modification occurs during the processing of pre-mRNA to mature mRNA and is not considered a posttranslational modification, which involves modifications to the protein after it has been synthesized. The other choices - phosphorylation, glycosylation, ubiquitination, and acetylation - are all examples of posttranslational modifications.

Which of the Following Is Not an Example of Posttranslational