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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 study found there is an increase in troponins, a protein found in blood that can often signal heart injury, in participants who spent 10 hours or more a day sitting. — Elizabeth Varnell, Vogue, "Here’s Why Sitting at a Desk All Day Is Harmful to Your Heart," 6 Jan. 2018 A blood test revealed my levels of a protein called troponin were off…something was wrong, but the doctors couldn't diagnose it. — Michelle Konstantinovsky, Marie Claire, "On Having a Baby and a Heart Attack: Why You Might Be at Risk for This Life-Threatening Disease," 2 Mar. 2017

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.

First Known Use of troponin

1966, in the meaning defined above

History and Etymology for troponin

by shortening & alteration from tropomyosin

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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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