Comparative bioenergetics of sulfate reduction in Desulfovibrio and Desulfotomaculum spp
Journal Article
·
· J. Bacteriol.; (United States)
OSTI ID:5765047
Extracts of Desulfotomaculum nigrificans, Desulfotomaculum orientis, and Desulfotomaculum ruminis exhibit low levels of inorganic pyrophosphatase but were found to have high levels of pyrophosphate:acetate phosphotransferase. Converely, extracts of Desulfovibrio gigas, Desulfovibrio vulgaris, and Desulfovibrio desulfuricans Norway 4 were shown to have high levels of inorganic pyrophosphatase but negligible amounts of pyrophosphate:acetate phosphotransferase. Both enzymes are reductant activated and appear to have an analogous function in removing pyrophosphate formed during the activation of sulfate. Conservation of the bond energy of pyrophosphate in Desulfotomaculum eliminates the necessity for invoking electron-transfer-coupled phosphorylatin to account for the growth of these bacteria on lactate plus sulfate. Relative growth yields of Desulfovibrio vulgaris and Desulfotomaculum orientis on lactate plus sulfate indicate that the latter does not carry out significant electron-transfer-coupled phosphorylation in this mode of growth.
- Research Organization:
- Univ. of Georgia, Athens
- DOE Contract Number:
- AS09-79ER10499
- OSTI ID:
- 5765047
- Journal Information:
- J. Bacteriol.; (United States), Journal Name: J. Bacteriol.; (United States) Vol. 145:2; ISSN JOBAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550200* -- Biochemistry
560302 -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOCHEMICAL REACTION KINETICS
BIOCHEMISTRY
BIOLOGICAL PATHWAYS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
DATA
ELECTRON TRANSFER
ENZYME ACTIVITY
EXPERIMENTAL DATA
GROWTH
INFORMATION
KINETICS
MICROORGANISMS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHORYLATION
REACTION KINETICS
REDUCTION
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
560302 -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOCHEMICAL REACTION KINETICS
BIOCHEMISTRY
BIOLOGICAL PATHWAYS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
DATA
ELECTRON TRANSFER
ENZYME ACTIVITY
EXPERIMENTAL DATA
GROWTH
INFORMATION
KINETICS
MICROORGANISMS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHORYLATION
REACTION KINETICS
REDUCTION
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS