Kinase molecule, computer model. Kinases, also known as phosphotransferases, are enzymes that catalyze the transfer of phosphate groups from a high-energy phosphate-containing molecule (such as ATP or ADP) to an organic molecule. This target molecule is called the substrate and the whole process is known as phosphorylation. The molecule is colour-coded: blue represents the amino acids alanine, lysine and arginine, and the red represents everything else.
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