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单词 tyrosine
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ty•ro•sine  (tī′rə sēn′, -sin, tir′ə-),USA pronunciation n. [Biochem.]
  1. Biochemistrya crystalline amino acid, HOC6H4CH2CH(NH2)COOH, abundant in ripe cheese, that acts as a precursor of norepinephrine and dopamine. Abbr.: Tyr;
    Symbol: Y
  • Greek tȳrós cheese + -ine2
  • 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
tyrosine /ˈtaɪrəˌsiːn -sɪn ˈtɪrə-/ n
  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
Etymology: 19th Century: from Greek turos cheese + -ine²
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更新时间：2024/9/20 9:29:19