Redundant potassium transporter systems guarantee the survival of Enterococcus faecalis under stress conditions

Abstract excerpt

Enterococcusis able to grow in media at pH from 5.0 to 9.0 and a high concentration of NaCl (8%). The ability to respond to these extreme conditions requires the rapid movement of three critical ions: proton (H+), sodium (Na+), and potassium (K+). The activity of the proton F0F1ATPase and the sodium Na+V0V1type ATPase under acidic or alkaline conditions, respectively, is well established inthese microorganisms....

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