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

Question

Quizplus · Accepted Answer

Receptor tyrosine kinase activity involves the addition of a phosphate group to specific tyrosine residues on the receptor protein. Blocking this process with a drug would inhibit this signaling pathway. The other answer choices are not directly dependent on the addition of phosphate groups to proteins.

Which of the Following Would Be Inhibited by a Drug