Transhydrogenase activities in the mitochondria of Taenia crassiceps (Zeder, 1800) cysticerci.
NADPH/NAD and NADH/NAD transhydrogenase activities have been demonstrated in the mitochondrial fraction of Taenia crassiceps cysticerci. These activities seem to result from the activities of two different enzyme systems. Both transhydrogenase activities exhibited a high heat resistence and they were completely abolished only by the temperatures higher than 100 degrees C. The activity of NADH/NAD transhydrogenase was rather high (116 nmol.min-1.mg-1 protein), but it was found to exhibit a low affinity to NADH (K'M = 1.43.10(-4) M). The physiological significance of NADH/NAD transhydrogenase is discussed.
Institute of Parasitology, Czechoslovak Academy of Sciences, Ceské Budĕjovice.
J
J
Zenka
J
J
Prokopic
D000818:Animals; D003552:Cysticercus / Q000201:enzymology* / Q000648:ultrastructure; D006358:Hot Temperature; D008928:Mitochondria / Q000201:enzymology; D009247:NADH, NADPH Oxidoreductases / Q000378:metabolism*; D009250:NADP Transhydrogenases / Q000378:metabolism*; D013621:Taenia / Q000201:enzymology*
D009247:NADH, NADPH Oxidoreductases; D009250:NADP Transhydrogenases