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[kahy-neys, -neyz, kin-eys, -eyz] /ˈkaɪ neɪs, -neɪz, ˈkɪn eɪs, -eɪz/
noun, Biochemistry
a transferase that catalyzes the phosphorylation of a substrate by ATP.
Origin of kinase
1900-05; kin(etic) + -ase Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for kinase
  • So to learn more about the process, the researchers disabled kinase proteins in yeast cells.
  • Pyruvate kinase deficiency is an inherited lack of the enzyme pyruvate kinase, which is used by red blood cells.
  • Tyrosine kinase inhibitor drugs block proteins involved in tumor cell growth and production.
British Dictionary definitions for kinase


/ˈkaɪneɪz; ˈkɪn-/
any enzyme that can convert an inactive zymogen to the corresponding enzyme
any enzyme that brings about the phosphorylation of a molecule
Word Origin
C20: from kin(etic) + -ase
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
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Word Origin and History for kinase

1902, from Greek kinein "to move" (see cite) + chemical suffix -ase.

Online Etymology Dictionary, © 2010 Douglas Harper
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kinase in Medicine

kinase ki·nase (kī'nās', -nāz', kĭn'ās', -āz')

  1. An enzyme that catalyzes the conversion of a proenzyme to an active enzyme.

  2. A various enzyme that catalyzes the transfer of a phosphate group from a donor, such as ADP or ATP, to an acceptor.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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kinase in Science
  (kī'nās', -nāz', kĭn'ās', -āz')   
Any of various enzymes that catalyze the transfer of a phosphate group from a donor, such as ADP or ATP, to an acceptor.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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