"Protein Kinase Protein PhosphorylationPTNCI" . "Protein Kinase Protein Phosphorylation"^^ . "C1514557"^^ . "Protein_Kinase_Protein_Phosphorylation"^^ . . "Protein Kinase Protein Phosphorylation involves covalent linkage of a phosphate group (from a donor compound such as ATP) with a serine, threonine, or tyrosine residue of a Protein Kinase acceptor, often as a mechanism of kinase activity regulation.NCI" . "Molecular Function"^^ . "C18970"^^ . "Protein Kinase Protein Phosphorylation"^^ . .