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

Calcium Ions

Positively charged atoms of calcium, playing vital roles in various physiological processes, including muscle contraction and neurotransmission.

Calmodulin

A calcium-binding messenger protein present in all eukaryotic cells, involved in various cellular processes by interacting with other proteins.

Phospholipid Second Messengers

Molecules derived from phospholipids that act within cells to transmit signals from a variety of receptors to their target molecules.