Calcium ions may act with phospholipid second messengers by binding to ____, which then regulates other proteins.
A) adenylyl cyclase
B) cyclic AMP
C) calmodulin
D) phosphodiesterase
E) protein kinase

Question

Quizplus · Accepted Answer

Calcium ions can bind to calmodulin, a protein that acts as a multifunctional intermediary in various cellular processes. Upon binding calcium, calmodulin undergoes a conformational change that allows it to interact with and regulate a variety of target proteins, including enzymes, ion channels, and other signaling molecules. This interaction is a key mechanism by which calcium ions act as second messengers in cellular signaling pathways.

Calcium Ions May Act with Phospholipid Second Messengers by Binding