Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biochemistry A nonessential amino acid C9H11NO3 found in most animal proteins, especially casein.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an amino acid found in most proteins; a precursor of several hormones

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek tūros, cheese; see teuə- in Indo-European roots + –ine.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek cheese.

Support

Help support Wordnik (and make this page ad-free) by adopting the word tyrosine.

Examples

  • Then it moves sugar into cells by activating an enzyme called tyrosine-kinase.

    Speedlinking 7/26/07 William Harryman 2007

  • 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.

    GEN News Highlights 2009

  • Btk is a type of enzyme known as a tyrosine kinase inside B-cells that plays an early key role in B-cell activation.

    BioSpace.com Featured News and Stories 2009

  • Gleevec clamps down on the cell's accelerator, a protein called tyrosine kinase, which drives cancer to reproduce.

    A Step Past Chemotherapy 2007

  • Gleevec clamps down on the cell's accelerator, a protein called tyrosine kinase, which drives cancer to reproduce.

    A Step Past Chemotherapy 2007

  • Protein contains tyrosine, which is converted into the alertness neurotransmitter, dopamine.

    NEWS.com.au | Top Stories 2011

  • Both of these older drugs, respectively known generically as dasatinib and nilotinib, are members of a class called tyrosine kinase inhibitors.

    Reuters: Press Release 2011

  • But by the 1990s, at Sugen, he was doing something very different, developing cancer-fighting pills that work by blocking enzymes called tyrosine kinases that cells use to communicate with one another.

    unknown title 2011

  • So-called tyrosine kinase inhibitor drugs such as imatinib, marketed by Swiss drugmaker Novartis as Glivec or Gleevec, and dasatinib, sold by Bristol-Myers Squibb as Sprycel, have transformed treatment of CML and are credited with turning it from a fatal cancer into a manageable condition.

    Yahoo! News: Business - Opinion 2011

  • When a leukemia drug was used in turn to block the enzyme - called tyrosine kinase c-Abl - it prevented destruction of those healthy cells.

    chron.com Chronicle 2011

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.