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Definition of "tyrosine" [tyrosine]

  • A white crystalline amino acid, C9H11NO3, that is obtained from the hydrolysis of proteins such as casein and is a precursor of epinephrine, thyroxine, and melanin. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "tyrosine" in a sentence
  • "Then it moves sugar into cells by activating an enzyme called tyrosine-kinase."
  • "The parasite infects the brain by forming a cyst within its cells and produces an enzyme called tyrosine hydroxylase, which is needed to make dopamine."
  • "Btk is a type of enzyme known as a tyrosine kinase inside B-cells that plays an early key role in B-cell activation."