_____ is NOT involved in signal transduction by the $\beta$-adrenergic receptor pathway.
A) Cyclic AMP synthesis
B) GTP hydrolysis
C) GTP-binding protein
D) Protein kinase
E) All of these are involved.

Question

Quizplus · Accepted Answer

All of the options listed (A: Cyclic AMP synthesis, B: GTP hydrolysis, C: GTP-binding protein, D: Protein kinase) are involved in the signal transduction pathway of the β-adrenergic receptor. This pathway typically involves the activation of a G protein-coupled receptor, leading to the activation of adenylyl cyclase, which then increases cyclic AMP synthesis. Cyclic AMP acts as a second messenger to activate protein kinase A, which then leads to various cellular responses. GTP-binding proteins (G proteins) are involved in the signal transduction from the receptor to adenylyl cyclase, and GTP hydrolysis is a critical step in the function of these G proteins.

_____ Is NOT Involved in Signal Transduction by The β\betaβ -Adrenergic Receptor Pathway

_____ Is NOT Involved in Signal Transduction by The $\beta$ -Adrenergic Receptor Pathway