The subunit of trimeric G proteins can function to
A) regulate ion channels.
B) activate adenylate cyclase.
C) inhibit phospholipase A.
D) inhibit phosphodiesterase.

Question

The  subunit of trimeric G proteins can function to
A) regulate ion channels. 
B) activate adenylate cyclase. 
C) inhibit phospholipase A. 
D) inhibit phosphodiesterase.

Quizplus · Accepted Answer

The 11ea8d43_ab82_2628_b445_3778b2f4bb84_TB6697_11_TB6697_11 subunit of trimeric G proteins is responsible for activating adenylate cyclase, which converts ATP to cyclic AMP (cAMP). This second messenger molecule then activates protein kinase A (PKA), which can then phosphorylate and activate downstream targets.

The Subunit of Trimeric G Proteins Can Function to