calmodulin
noun
cal·mod·u·lin
(ˌ)kal-ˈmä-jə-lin 
-dyu̇-lin
: a calcium-binding protein that mediates cellular metabolic processes (such as the contraction of muscle fibers) by regulating the activity of calcium-dependent enzymes
Examples of calmodulin in a Sentence
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The disorder, an abbreviation for calcium/calmodulin dependent protein kinase 2, impacts mobility and brain function.
—
Brenton Blanchet, Peoplemag, 26 June 2023
This seemed significant: Other calmodulin variants were associated with severe cardiac disorders and sudden death in infancy.
—Oscar Schwartz, Wired, 9 Dec. 2021
Cunningham and her postdoc at the time, Christine Kirvan, found that the antibodies literally bind to human neurons, activating an enzyme called calcium/calmodulin-dependent protein (CaM) kinase II.
—Pamela Weintraub, Discover Magazine, 3 Jan. 2019
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Brenton Blanchet, Peoplemag, 26 June 2023
This seemed significant: Other calmodulin variants were associated with severe cardiac disorders and sudden death in infancy.
—Oscar Schwartz, Wired, 9 Dec. 2021
Cunningham and her postdoc at the time, Christine Kirvan, found that the antibodies literally bind to human neurons, activating an enzyme called calcium/calmodulin-dependent protein (CaM) kinase II.
—Pamela Weintraub, Discover Magazine, 3 Jan. 2019
Cite this Entry
“Calmodulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calmodulin. Accessed 29 Sep. 2025.
Copy CitationMedical Definition
calmodulin
noun
cal·mod·u·lin
ˌkal-ˈmäj-ə-lən
: a calcium-binding protein that mediates cellular metabolic processes (as muscle-fiber contraction) by regulating the activity of specific calcium-dependent enzymes
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