Protein kinases generally regulate the activity of target proteins by transferring a phosphate group from ATP to hydroxyl group
By phosphorylating particular amino acids with ATP as the source of phosphate, protein kinases (PTKs) are enzymes that control the biological activity of proteins. This results in a conformational change from an inactive to an active form of the protein.
Learn more about Protein kinase here:
https://brainly.com/question/22001008
#SPJ4