Abstract
Transplasma-membrane redox systems have received increasing attention in the last years as they have been found in all cells examined and appear to be a general characteristic of cells. NADH-dehydrogenase activities, using several electron acceptors, are observed in highly purified synaptic membrane preparations. These activities cannot be accounted for by microsomal or mitochondrial contamination. The NADH-dehydrogenases of synaptic membranes show a selective response to several agents: they are insensitive to rotenone, antimycin, chelating agents such as EDTA, o-phenanthroline, alpha-picolinate or nitrilotri-acetate and Nethylmaleimide; inhibition is observed with atebrin, azide, p-chloro-mercuribenzoate, and the activity vanishes upon limited proteolysis; the neuroexcitatory aminoacids Glu and Asp and their agonists markedly stimulate whereas dopamine and adrenaline strongly inhibit the NADH-acceptor oxido-reductase activities. The electron transport system is further markedly activated by antidepressants, but is unaffected by alpha- and beta-agonists or antagonists, neither by peptide hormones, opiates, adenosine, GABA and benzodiazepines, nor by nicotinic and muscarinic acids or acetylcholine.
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© 1988 Springer Science+Business Media New York
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Dreyer, JL., Treichler, T. (1988). NADH-Dehydrogenases in Synaptic Plasma Membranes. In: Crane, F.L., Morré, D.J., Löw, H. (eds) Plasma Membrane Oxidoreductases in Control of Animal and Plant Growth. NATO ASI Series, vol 7. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-8029-0_51
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DOI: https://doi.org/10.1007/978-1-4684-8029-0_51
Publisher Name: Springer, Boston, MA
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