Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?
A)G protein-coupled receptor signalling
B)ligand-gated ion channel signalling
C)adenylyl cyclase activity
D)phosphatase activity
E)receptor tyrosine kinase activity

Question

Quizplus · Accepted Answer

Receptor tyrosine kinase activity involves the addition of phosphate groups to specific tyrosine residues on the kinase, which activates downstream signalling pathways. If a drug blocks the addition of phosphate groups to proteins, then receptor tyrosine kinase activity would be inhibited as it relies on protein phosphorylation.

Which of the Following Would Be Inhibited by a Drug