ABSTRACT
In this communication, we report, for the first time in the literature, on the presence of UD-PAG-2'-epimerase catalytic activity in various organs; i.e. kidney, brain, heart, testicle, and pancreas of rat (Mus norvegicus albinus) and the kinetical behavior of hepatic and renal activities are compared in a preliminary way. The subcellular distribution, the enzymatic stability at 4 degrees C., the catalytical efficiency and stability as a function of pH, and the enzymatic activity and differential denaturation as a function of the temperature would allow to postulate on the existence of UDPAG=2'-epimerase isozymes. The medical importance of such a differential kinetical behaviour of UDPAG-2'-epimerase as a function of its tissue origin is stressed, particularly in connection to the differential diagnosis, prognosis and treatment of various human diseases.
