TRANSMEMBRANE PH OF CLOSTRIDIUM-ACETOBUTYLICUM IS INVERTED (MORE ACIDIC INSIDE) WHEN THE IN-VIVO ACTIVITY OF HYDROGENASE IS DECREASED

Authors
GIRBAL L VASCONCELOS I SOUCAILLE P
Citation
L. Girbal et al., TRANSMEMBRANE PH OF CLOSTRIDIUM-ACETOBUTYLICUM IS INVERTED (MORE ACIDIC INSIDE) WHEN THE IN-VIVO ACTIVITY OF HYDROGENASE IS DECREASED, Journal of bacteriology, 176(19), 1994, pp. 6146-6147
Citations number
14
Categorie Soggetti
Microbiology
Journal title
Journal of bacteriology → ACNP
ISSN journal
00219193
Volume
176
Issue
19
Year of publication
1994
Pages
6146 - 6147
Database
ISI
SICI code
0021-9193(1994)176:19<6146:TPOCII>2.0.ZU;2-Q
Abstract
Evidence is reported here that alkalinization of Clostridium acetobuty licum cytoplasm involves hydrogenase activity. A decrease of in vivo h ydrogenase activity is accompanied by intracellular accumulation of pr otons leading to a negative (interior acidic) pH gradient. How ever, t he organism is able to maintain a constant proton motive force by inte rconverting chemical and electrical potentials.