tyrosine

noun
ty·​ro·​sine | \ ˈtī-rə-ˌsēn How to pronounce tyrosine (audio) \

Definition of tyrosine

: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (such as epinephrine and melanin)

Examples of tyrosine in a Sentence

Recent Examples on the Web The drugs target solid tumors that show specific biomarkers—namely microsatellite instability (MSI) and neurotrophic receptor tyrosine kinase (NTRK) gene fusion—irrespective of where the tumors are growing in the body. Scientific American, "The Coming Age of Molecular Medicine," 2 Oct. 2019 The drug belongs to a large class of cancer drugs called tyrosine kinase inhibitors, the fruits of research by Tony Hunter at the Salk Institute four decades ago. San Diego Union-Tribune, "Turning Point Therapeutics raises $202 million for cancer therapy," 17 Sep. 2019 For his part, Hunter performed research that led to an entirely new category of cancer drugs called tyrosine kinase inhibitors. San Diego Union-Tribune, "Once shelved as too risky, blood cancer drug discovered in San Diego gets FDA approval," 19 Aug. 2019 Choanoflagellates have genes for tyrosine kinases, enzymes that, in complex animals, help control the functions of specialized cells, such as insulin secretion in the pancreas. Elizabeth Pennisi, Science | AAAS, "The momentous transition to multicellular life may not have been so hard after all," 28 June 2018 Both monoclonal antibodies and tyrosine kinases now provide the basis for many new medicines coming to market. Fred D. Ledley, STAT, "30 years is too long to wait for new medicines. There are ways to speed up drug development," 6 June 2018 Hunter made his reputation with the 1979 discovery of how enzymes called tyrosine kinases can cause cancer. Bradley J. Fikes, sandiegouniontribune.com, "Superstar cancer researcher Tony Hunter of Salk Institute wins award, makes new finding," 4 Apr. 2018 But tyrosine is just one of the 20 amino acids normally found in protein. Bradley J. Fikes, sandiegouniontribune.com, "Superstar cancer researcher Tony Hunter of Salk Institute wins award, makes new finding," 4 Apr. 2018 The class of cancer drugs that block phosphorylation activity are called tyrosine kinase inhibitors. Bradley J. Fikes, sandiegouniontribune.com, "Superstar cancer researcher Tony Hunter of Salk Institute wins award, makes new finding," 4 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tyrosine.' 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 tyrosine

1857, in the meaning defined above

History and Etymology for tyrosine

International Scientific Vocabulary, irregular from Greek tyros cheese — more at butter

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Time Traveler for tyrosine

Time Traveler

The first known use of tyrosine was in 1857

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Statistics for tyrosine

Last Updated

23 Nov 2019

Cite this Entry

“Tyrosine.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/tyrosine. Accessed 16 December 2019.

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More Definitions for tyrosine

tyrosine

noun
ty·​ro·​sine | \ ˈtī-rə-ˌsēn How to pronounce tyrosine (audio) \

Medical Definition of tyrosine

: a phenolic amino acid C9H11NO3 that is a precursor of several important substances (as epinephrine and melanin) abbreviation Tyr

More from Merriam-Webster on tyrosine

Britannica.com: Encyclopedia article about tyrosine

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