The sympathetic effects of the heart muscle is stimulated through activation of G(s) protein, 2nd messenger pathways. Which of the following is an accurate step in this type of pathway signaling?
A. IP3 is released by the protein kinase A.
B. G(s) directly stimulates the production of cAMP. from ATP.
C. Adenylyl cyclase activates protein kinase A.
D. cAMP phosphorylates several downstream targets.
E. Ligand binding leads to GDP replacement by GTP
A. IP3 is released by the protein kinase A.
B. G(s) directly stimulates the production of cAMP. from ATP.
C. Adenylyl cyclase activates protein kinase A.
D. cAMP phosphorylates several downstream targets.
E. Ligand binding leads to GDP replacement by GTP