Biological Chemistry II
A kinase is an enzyme that catalyzes the transfer of a phosphate group from a high-energy molecule, usually ATP, to a specific substrate. This process, known as phosphorylation, plays a crucial role in regulating various cellular activities, such as signal transduction, metabolism, and cell division. By adding a phosphate group to proteins or other molecules, kinases can change their activity, localization, or interaction with other molecules, making them essential for many biochemical pathways.
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