Two major potassium uptake systems, KtrI and KtrII, in<i>Enterococcus hirae</i>
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説明
We isolated a mutant, JEMK1, which did not grow at pH 6.0 in medium containing 0.5 mM KCl, derived from a Enterococcus hirae mutant deficient in the KtrII K+ uptake system. This mutant showed an impairment in the proton potential-dependent K+ uptake, the activity of the KtrI K+ uptake system, and did not grow well in K+-poor media in a wide pH range from 6 to 10, suggesting that KtrI and KtrII are the main systems for potassium accumulation of this bacterium.
収録刊行物
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- FEMS Microbiology Letters
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FEMS Microbiology Letters 176 449-453, 1999-07-01
Oxford University Press (OUP)