the purkinje fibers of the atrioventricular conducting system of the bovine heart differ from the myocardium proper in containing a greater activity of the glycolytic and gluconeogenetic enzymes -- lactate dehydrogenase , glyceraldehyde-phosphate dehydrogenase , hexokinase , glucosephosphate isomerase and phosphoglucomutase , and less activity of the aerobic enzymes -- nadh : nitrobt oxidoreductase and isocitrate dehydrogenase ( nadp+ ) .
C0022917
lactate
C0030016
oxidoreductase