Cation/H+ antiporters mediate potassium and sodium fluxes in Pichia sorbitophila. Cloning of the PsNHA1 and PsNHA2 genes and expression in Saccharomyces cerevisiae

Pichia sorbitophila grows rapidly in the presence of very high NaCl concentrations. Under these conditions, even when the K+ concentration is low, P. sorbitophila cells can maintain low Na+ and high K+ contents. This remarkable capacity of P. sorbitophila fails when the external pH is not acidic. Th...

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