Hydrolysis of micellar diheptanoylphosphatidylcholine catalyzed by bovine pancreatic phospholipase A2: kinetic characterization of group I and II enzymes.

Abstract

Initial velocity data for the hydrolysis of micellar 1,2-diheptanoyl-sn-glycero-3-phosphorylcholine (diC7PC) catalyzed by bovine pancreatic PLA2 (Group I) were analyzed using the Michaelis-Menten equation. The Km value for the micellar substrate was found to be independent of Ca2+ concentration, as was the Km value for the monodispersed substrate. The pH… (More)

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