Abstract
Abstract“Malic” enzyme and fumarate reductase activities have been demonstrated and partially characterized in mitochondria from the adult cestode Spirometra mansonoides. The former enzyme requires Mn++ and NAD+ for optimal activity, but also couples with NADP+ at approximately 60% of the rate observed with NAD+. The mitochondrial membrane bound fumarate reductase is of particular interest since activities have been obtained at comparable rates with either NADH or NADPH as electron donor. Intact Spirometra mitochondria catalyze an anaerobic, malate dependent, electron transport associated uptake of inorganic 32P into organic phosphate.Spirometra mitochondria also exhibit three transhydrogenase activities. NADH:NAD+, 4 NADPH:NAD+ and NADH:NADP+ transhydrogenases are described and possible physiological roles are discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
