[The sodium cycle--a new type of bacterial energetics].
The literature data and experimental results of the author's laboratory on the role of Na+ in bacterial energetics are reviewed. It was shown that certain bacterial species utilize the transmembrane difference of Na+ electrochemical potentials (delta mu Na+) as a convertible membrane-linked form of energy. The membranes of such bacteria were found to contain delta mu Na+ generators (e. g., decarboxylases of some carboxylic acids of NADH-menaquinone reductase). It was shown that delta mu Na+ formed by these generators may support all the three main types of work of the bacterial cell, i. e., chemical (ATP synthesis), osmotic (substrate accumulation) and mechanical (motility).
Skulachev
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D000255:Adenosine Triphosphate / Q000096:biosynthesis; D001419:Bacteria / Q000378:metabolism*; D001692:Biological Transport; D004734:Energy Metabolism; D006859:Hydrogen / Q000378:metabolism; D009994:Osmolar Concentration; D011522:Protons; D012964:Sodium / Q000378:metabolism*
D011522:Protons; D006859:Hydrogen; D000255:Adenosine Triphosphate; D012964:Sodium
Natrievyĭ tsikl--novyĭ tip bakterial'noĭ énergetiki.