Kinase definitions

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.
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An enzyme capable of activating a zymogen or one causing the transfer of the terminal phosphate group, generally from ATP, to a receiving molecule.
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Any of various enzymes that catalyze the transfer of a phosphate group from a donor, such as ADP or ATP, to an acceptor protein. Kinases regulate many essential cellular processes.
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Any of various enzymes that catalyze the transfer of a phosphate group from a donor, such as ADP or ATP, to an acceptor.
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(biochemistry, organic chemistry) Any of a group of enzymes that transfers phosphate groups from high-energy donor molecules, such as ATP, to specific target molecules (substrates), in a process termed phosphorylation.
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Origin of kinase

From Ancient Greek κινεῖν (kinein, “to move”) + -ase, a suffix forming enzyme names.