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cAMP regulates the functional activity, coupling efficiency and structural organization of mammalian FOF1 ATP synthase. | LitMetric

cAMP regulates the functional activity, coupling efficiency and structural organization of mammalian FOF1 ATP synthase.

Biochim Biophys Acta

Institute of Biomembrane and Bioenergetics, National Research Council, Bari 70124, Italy; Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari "Aldo Moro", Bari 70124, Italy.

Published: April 2016

AI Article Synopsis

Article Abstract

The present study shows that in isolated mitochondria and myoblast cultures depletion of cAMP, induced by sAC inhibition, depresses both ATP synthesis and hydrolysis by the FOF1 ATP synthase (complex V) of the oxidative phosphorylation system (OXPHOS). These effects are accompanied by the decrease of the respiratory membrane potential, decreased level of FOF1 connecting subunits and depressed oligomerization of the complex. All these effects of sAC inhibition are prevented by the addition of the membrane-permeant 8-Br-cAMP. These results show, for the first time, that cAMP promotes ATP production by complex V and prevents, at the same time, its detour to a mitochondrial membrane leak conductance, which is involved in cell death.

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Source
http://dx.doi.org/10.1016/j.bbabio.2016.01.006DOI Listing

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