Na+/H+ exchange in the cyanobacterium Synechococcus 6311.
The cyanobacterium Synechococcus 6311 adapts to grow in 0.6 M NaCl by developing an efficient system for sodium extrusion. In the present investigation cells loaded with NaC1 were subjected to a large dilution. Changes in fluorescence quenching of acridine orange as a function of transmembrane Na+ gradients provide evidence that Na+/H+ exchange activity greatly enhanced in salt-adapted cells.
D000222:Adaptation, Physiological; D001692:Biological Transport; D000458:Cyanobacteria / Q000254:growth & development / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007476:Ionophores / Q000494:pharmacology; D009994:Osmolar Concentration; D012964:Sodium / Q000378:metabolism*; D012965:Sodium Chloride; D013050:Spectrometry, Fluorescence
D007476:Ionophores; D012965:Sodium Chloride; D006859:Hydrogen; D012964:Sodium