In cell biology, Protein kinase A (PKA) refers to a family of enzymes whose activity is dependent on cellular levels of cyclic AMP (cAMP). PKA is also known as cAMP-dependent protein kinase (EC 220.127.116.11). Protein kinase A has several functions in the cell, including regulation of glycogen, sugar, and lipid metabolism.
It should not be confused with AMP-activated protein kinase - which, although being of similar nature, may have opposite effects - nor with cyclin-dependent kinases (Cdks), nor with the acid dissociation constant, pKa.
Read more about Protein Kinase A: Function
Famous quotes containing the word protein:
“Firm-style bean curd insoles cushion feet, absorb perspiration and provide more protein than meat or fish innersoles of twice the weight. Tofu compresses with use, becoming more pungent and flavorful. May be removed when not in use to dry or marinate. Innersoles are ready to eat after 1,200 miles of wear. Each pair provides adult protein requirement for 2 meals. Insoles are sized large to allow for snacks. Recipe booklet included.”
—Alfred Gingold, U.S. humorist. Items From Our Catalogue, Tofu Innersoles, Avon Books (1982)