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tyrosine

[ tahy-ruh-seen, -sin, tir-uh- ]

noun

, Biochemistry.
  1. a crystalline amino acid, HOC 6 H 4 CH 2 CH(NH 2 )COOH, abundant in ripe cheese, that acts as a precursor of norepinephrine and dopamine. : Tyr; : Y


tyrosine

/ -sɪn; ˈtɪrə-; ˈtaɪrəˌsiːn /

noun

  1. an aromatic nonessential amino acid; a component of proteins. It is a metabolic precursor of thyroxine, the pigment melanin, and other biologically important compounds
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


tyrosine

/ rə-sēn′ /

  1. A nonessential amino acid. Chemical formula: C 9 H 11 NO 3 .
  2. See more at amino acid


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Word History and Origins

Origin of tyrosine1

1855–60; < Greek tȳrós cheese + -ine 2
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Word History and Origins

Origin of tyrosine1

C19: from Greek turos cheese + -ine ²
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Example Sentences

Both the tyrosine and tryptophane may be either in the free state or in combination as polypeptid or peptone.

This reaction is caused by the tyrosine group (p. oxy α amido phenyl-propionic acid).

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tyrosinasetyrosinemia