NapA Na^+/H^+ Antiporter as a Sodium Extrusion System Supplementary to the Vacuolar Na^+-ATPase in Enterococcus hirae

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概要

• 論文の詳細を見る

• Enterococcus hirae has two sodium extrusion systems : the NapA Na^+/H^+ antiporter and the vacuolar Na^+-AT-Pase. We found that a NapA mutant, WD4,which is deficient in Na^+/H^+ antiporter activity, grew well in the pH range of 6 to 10 up to 200 mM sodium. This was due to active, potential-independent sodium extrusion by the Na^+-ATPase, which was induced under these conditions. The NapA Na^+/H^+ antiporter is thus not a prerequisite for growth of E. hirae in the presence of sodium, but plays a supplementary role in sodium extrusion at acidic pH.

• 社団法人日本農芸化学会の論文
• 1998-12-23

著者

• KAKINUMA Yoshimi

  Faculty of Agriculture, Ehime University

• KAKINUMA Yoshimi

  Department of Applied Bioresource Science, Faculty of Agriculture, Ehime University

• IKAWA-KITAYAMA Kaori

  Tochigi Research Laboratories of Kao Corporation

• Igarashi Kaori

  Graduate School Of Human Life Sciences Showa Women's University

• Igarashi Kazuei

  Faculty of Pharmaceutical Science,Chiba University

• Kakinuma Yoshimi

  Dep. Of Applied Bioresource Sci. Fac. Of Agriculture Ehime Univ.

• Kakinuma Yoshimi

  Faculty Of Agriculture Ehime University

• Igarashi K

  Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers

• KAWANO Miyuki

  Graduate School of Pharmaceutical Sciences, Chiba University

• Kawano Miyuki

  Graduate School Of Pharmaceutical Sciences Chiba University

• KAWANO Miyuki

  Faculty of Pharmaceutical Sciences, Chiba University

• SOLIOZ Marc

  Department of Clinical Pharmacology, University of Berne

• Solioz Marc

  Department Of Clinical Pharmacology University Of Berne

• Kakinuma Y

  Integrated Center For Sciences (incs) Ehime University

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