calmodulin

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calmodulin

 [kal-mod´u-lin]
a calcium-binding protein present in all nucleated cells, thought to be an essential mediator of most calcium-sensitive cellular processes.

cal·mod·u·lin

(kal-mod'ū-lin),
A small, ubiquitous eukaryotic protein that binds calcium ions, thereby becoming the agent for many of the cellular effects long ascribed to calcium ions. This calcium-protein complex binds to the apoenzyme, to form the holoenzyme, of certain phosphodiesterases; through these mechanisms, the complex regulates adenylate and guanylate cyclases, many kinases, phospholipase A2 activity, and other basic cellular functions.
[calcium + modulate]

calmodulin

(kăl-mŏj′ə-lĭn)
n.
A calcium-binding protein that mediates many metabolic processes, such as contraction of smooth muscle, by binding to enzymes and other proteins.

cal·mod·u·lin

(kal-mod'yū-lin)
A protein that binds calcium ions, thereby becoming the agent for many of the cellular effects long ascribed to calcium ions.
[calcium + modulate]

cal·mod·u·lin

(kal-mod'yū-lin)
Protein that binds calcium ions.
[calcium + modulate]