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[usually with modifier] An enzyme that catalyses the transfer of a phosphate group from ATP to a specified molecule.
- ‘Protein kinases are enzymes that participate in signal transduction processes and, thus, in the control of cell growth.’
- ‘In general, protein kinases are enzymes that phosphorylate proteins, which then become activated.’
- ‘The consequence of these mutations is a cascade phosphorylation of certain serine/threonine protein kinases.’
- ‘Protein kinases turn on other enzymes by a chemical reaction called phosphorylation that adds phosphate tags to proteins.’
- ‘Protein tyrosine kinases play fundamental roles in signal transduction pathways.’
Early 20th century: from Greek kinein to move + -ase.
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