ISSN:
1432-072X
Keywords:
Marine bacterium
;
Manganese oxidation
;
Everted membrane vesicles
;
ATP synthesis
;
Energy coupling
;
DNP stimulation
;
ADP stimulation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract ATP synthesis couple to Mn2+ oxidation was demonstrated with partially or wholly everted membrane vesicles from marine bacterial strain SSW22. The extent of ATP synthesis in these experiments was greater in earlier experiments. Chemiosmosis is the most probable mechanism for energy coupling because 2,4-dinitrophenol at appropriate concentrations stimulated Mn2+ oxidation by intact cells, membrane vesicles or extracts of strains SSW22, S13, and marine pseudomonad 16B. Externally added ADP stimulated Mn2+ oxidation by everted membrane vesicles of strain SSW22. This stimulation was oxygen-dependent. It is explained on the basis of a chemiosmotic model for energy coupling in Mn2+ oxidation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00249171
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