Dependence on the F0F1-ATP synthase for the activities of the hydrogen-oxidizing hydrogenases 1 and 2 during glucose and glycerol fermentation at high and low pH in Escherichia coli.

Abstract excerpt

Escherichia coli has four [NiFe]-hydrogenases (Hyd); three of these, Hyd-1, Hyd-2 and Hyd-3 have been characterized well. In this study the requirement for the F(0)F(1)-ATP synthase for the activities of the hydrogen-oxidizing hydrogenases Hyd-1 and Hyd-2 was examined. During fermentative growth on glucose at pH 7.5 an E. coli F(0)F(1)-ATP synthase mutant (DK8) lacked hydrogenase activity. At pH 5.5 hydrogenase...

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