A posttranslational modification commonly used by signal transduction pathways to regulate the activity of proteins is _______ of specific amino acid residues.This modification often changes the conformation of enzymes, resulting in activation (or inactivation) of the enzyme's catalytic activity.
A) glycosylation
B) proteolysis
C) splicing
D) nuclear signaling
E) phosphorylation

Question

Quizplus · Accepted Answer

Phosphorylation is a posttranslational modification commonly used by signal transduction pathways to regulate the activity of proteins. It involves the addition of a phosphate group to specific amino acid residues, often changing the conformation of enzymes and resulting in activation or inactivation of the enzyme's catalytic activity.

A Posttranslational Modification Commonly Used by Signal Transduction Pathways to Regulate