Respiration-driven Na+ pump and Na+ circulation in Vibrio parahaemolyticus.
Sodium circulation in Vibrio parahaemolyticus was investigated. We observed respiration-driven Na+ extrusion from cells by using a Na+ electrode. The Na+ extrusion was insensitive to a proton conductor, carbonyl cyanide m-chlorophenylhydrazone, and sensitive to a respiratory inhibitor, CN-. These results support the idea of the existence of a respiratory Na+ pump in V. parahaemolyticus. The respiration-driven Na+ extrusion was observed only under alkaline conditions.
Tsuchiya
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Shinoda
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D000596:Amino Acids / Q000378:metabolism; D001693:Biological Transport, Active; D002352:Carrier Proteins / Q000378:metabolism; D004734:Energy Metabolism; D006863:Hydrogen-Ion Concentration; D010101:Oxygen Consumption; D012964:Sodium / Q000378:metabolism*; D017923:Sodium-Hydrogen Exchangers; D014733:Vibrio / Q000502:physiology*
D000596:Amino Acids; D002352:Carrier Proteins; D017923:Sodium-Hydrogen Exchangers; D012964:Sodium