Signal peptidase activity is responsible for:
A)directing defective proteins to the ubiquitin-proteasome pathway.
B)adding a signal phosphate group to some proteins,regulating their activity.
C)removing a hydrophobic secretion signal from the N-terminus of a protein.
D)adding a signal glycosylation modification to a new protein.
E)destroying peptide bonds in defective proteins.

Question

Quizplus · Accepted Answer

Signal peptidase activity is responsible for removing a hydrophobic secretion signal from the N-terminus of a protein during the process of protein secretion. This cleavage releases the mature, functional protein from the membrane-bound precursor.

Signal Peptidase Activity Is Responsible For