Medical Dictionary
Main Entry:
protein kinase Function:
noun : any of a class of allosteric enzymes that possess a catalytic subunit which transfers a phosphate from ATP to one or moreamino acid residues (as serine, threonine, or tyrosine) in a protein's side chain resulting in a conformational change affecting protein function, that play a role in regulating intracellularprocesses, and that include many which are activated by the binding of a second messenger (as cyclic AMP)
