Definition of Protein kinase A
Protein kinase A: An enzyme system that is activated by cyclic adenosine monophosphate (cAMP) and that catalyzes the activity of intracellular proteins. There are two isozymes of protein kinase A, type I and type II. Also known as cAMP-dependent protein kinase and cyclic AMP-dependent protein kinase.
Last Editorial Review: 6/9/2016
Back to MedTerms online medical dictionary A-Z List
Need help identifying pills and medications?