troponin

noun
tro·​po·​nin | \ ˈtrō-pə-nən How to pronounce troponin (audio) , ˈträ-, -ˌnin \

Definition of troponin

: a protein of muscle that together with tropomyosin forms a regulatory protein complex controlling the interaction of actin and myosin and that when combined with calcium ions permits muscular contraction

Examples of troponin in a Sentence

Recent Examples on the Web The blood test Erickson recommends measures troponin proteins, which are normally found in the heart muscle but released into the bloodstream when the heart is injured. Stephanie Innes, USA TODAY, 22 Sep. 2020 Several studies have now shown that roughly 10 to 30 percent of hospitalized COVID-19 patients had high levels of troponin—a protein released into the blood when the heart’s muscle cells are damaged. Ed Yong, The Atlantic, 21 Sep. 2020 Ideally, such athletes should undergo cardiac imaging, plus a blood test for troponin -- which may indicate heart-muscle damage -- to rule out ongoing myocardial damage that would predispose the heart to additional strain, Jennings said. Jason Gale, Bloomberg.com, 8 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'troponin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of troponin

1966, in the meaning defined above

History and Etymology for troponin

by shortening & alteration from tropomyosin

Note: The name was apparently first used in print in a letter by the Japanese biochemist Setsuro Ebashi (1922-2006) and coworker Ayako Kodama, "Interaction of Troponin with F-Actin in the Presence of Tropomyosin," Journal of Biochemistry (Japanese Biochemical Society), vol. 59, issue 4 (April, 1966), p. 425.

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Time Traveler for troponin

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The first known use of troponin was in 1966

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Cite this Entry

“Troponin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/troponin. Accessed 23 Jul. 2021.

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More Definitions for troponin

troponin

noun
tro·​po·​nin | \ ˈtrōp-ə-nən How to pronounce troponin (audio) , ˈträp- How to pronounce troponin (audio) , -ˌnin \

Medical Definition of troponin

: a protein of muscle that together with tropomyosin forms a regulatory protein complex controlling the interaction of actin and myosin and that when combined with calcium ions permits muscular contraction

More from Merriam-Webster on troponin

Britannica.com: Encyclopedia article about troponin

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