Protein kinase

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A Protein Kinase is a very important protein in signal transduction within cells. Protein Kinases are a family of proteins which, when activated, phosphorylate other proteins or molecules. They are very important in cell signaling as they cause a phosphorylation cascade which is required to amplify the secondary messenger. They are also very important in other biochemical pathways, for example there are protein kinases involved in the metabolism of glucose.

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