Histone KINASE (Homo sapiens)

 Kinases are enzymes that transfer phosphate groups from high-energy donor molecules, such as ATP, to specific target molecules (substrates), the process  termed  as phosphorylation. Phosphorylation of a protein causes it to be bound to other proteins which have "recognition domains". As a result of binding a particular protein, a distinct signaling system may be activated or inhibited.

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