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Article

Isolation and properties of Enterococcus hirae mutants defective in the potassium/proton antiport system.

Journal of bacteriology - 1 Jul 1999

Kakinuma Y, Igarashi K

Abstract excerpt

A K+/H+ antiporter regulates cytoplasmic pH in Enterococcus hirae growing at alkaline pH. Mutants defective in this antiport activity were alkaline pH sensitive. One mutant, Pop1, lacked both K+/methylamine exchange at pH 9.5 and concomitant acidification of cytoplasmic pH. Pop1 grew well at pHs below 8 but did not at pHs above 9, conditions under which cytoplasmic pH was not fully acidified.

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Identifiers

PMID: 10383981
DOI: 10.1128/JB.181.13.4103-4105.1999
PMCID: PMC93903

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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