PK has various meanings in the Health category. Discover the full forms, definitions, and usage contexts of PK in Health.
A protein kinase is a kinase enzyme that modifies other proteins by chemically adding phosphate groups to them. Phosphorylation usually results in a functional change of the target protein by changing enzyme activity, cellular location, or association with other proteins. The human genome contains about 500 protein kinase genes and they constitute about 2% of all human genes.
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