Transmembrane pH of Clostridium acetobutylicum is inverted (more acidic inside) when the in vivo activity of hydrogenase is decreased-Reference-Cited by-同舟云学术

Transmembrane pH of Clostridium acetobutylicum is inverted (more acidic inside) when the in vivo activity of hydrogenase is decreased

Published:1994-10 Issue:19 Volume:176 Page:6146-6147
ISSN:0021-9193
Container-title:Journal of Bacteriology
language:en
Short-container-title:J Bacteriol

Author:

Girbal L¹,Vasconcelos I¹,Soucaille P¹

Affiliation:

1. Centre de Ingénierie Gilbert Durand, Institut National des Sciences Appliquées, Toulouse, France.

Abstract

Evidence is reported here that alkalinization of Clostridium acetobutylicum cytoplasm involves hydrogenase activity. A decrease of in vivo hydrogenase activity is accompanied by intracellular accumulation of protons leading to a negative (interior acidic) pH gradient. However, the organism is able to maintain a constant proton motive force by interconverting chemical and electrical potentials.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Link

https://journals.asm.org/doi/pdf/10.1128/jb.176.19.6146-6147.1994

Reference14 articles.

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3. Reduced coenzyme F420: heterodisulfide oxidoreductase, a proton-translocating redox system in methanogenic bacteria;Deppenmeier U.;Proc. Natl. Acad. Sci. USA,1990

4. Girbal L L Vasconcelos and P. Soucaille. How neutral red modified carbon and electron flow in Clostidium acetobutylicum grown in chemostat culture at neutral pH. FEMS Microbiol. Rev. in press.

5. Electron transport and electrochemical proton gradient in membrane vesicles of Clostridium thermoautotrophicum;Hugenholtz J.;J. Bacteriol.,1989

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