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 mostanimal proteins , especiallycasein .
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
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Then it moves sugar into cells by activating an enzyme called tyrosine-kinase.
Speedlinking 7/26/07 William Harryman 2007
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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
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Btk is a type of enzyme known as a tyrosine kinase inside B-cells that plays an early key role in B-cell activation.
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Gleevec clamps down on the cell's accelerator, a protein called tyrosine kinase, which drives cancer to reproduce.
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Gleevec clamps down on the cell's accelerator, a protein called tyrosine kinase, which drives cancer to reproduce.
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Protein contains tyrosine, which is converted into the alertness neurotransmitter, dopamine.
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Both of these older drugs, respectively known generically as dasatinib and nilotinib, are members of a class called tyrosine kinase inhibitors.
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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
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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.
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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
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