Which of the following functions as a regulatory protein by dephosphorylating activated enzymes?
A)receptor tyrosine kinase
B)phosphoprotein phosphatase
C)heterotrimeric G protein phosphorylase
D)guanine nucleotide exchange factor
E)Sos protein

Question

Quizplus · Accepted Answer

Phosphoprotein phosphatase functions as a regulatory protein by removing phosphate groups from activated enzymes, thus deactivating them. Receptor tyrosine kinase activates enzymes by adding phosphate groups, heterotrimeric G protein phosphorylase and guanine nucleotide exchange factor both function in signal transduction pathways, and Sos protein activates the Ras signaling pathway.

Which of the Following Functions as a Regulatory Protein by Dephosphorylating