PMID: 9190814Jun 1, 1997Paper

Pathways for utilization of carbon reserves in Desulfovibrio gigas under fermentative and respiratory conditions

Journal of Bacteriology
P FareleiraH Santos

Abstract

The sulfate-reducing bacterium Desulfovibrio gigas accumulates large amounts of polyglucose as an endogenous carbon and energy reserve. In the absence of exogenous substrates, the intracellular polysaccharide was utilized, and energy was conserved in the process (H. Santos, P. Fareleira, A. V. Xavier, L. Chen, M.-Y. Liu, and J. LeGall, Biochem. Biophys. Res. Commun. 195:551-557, 1993). When an external electron acceptor was not provided, degradation of polyglucose by cell suspensions of D. gigas yielded acetate, glycerol, hydrogen, and ethanol. A detailed investigation of the metabolic pathways involved in the formation of these end products was carried out, based on measurements of the activities of glycolytic enzymes in cell extracts, by either spectrophotometric or nuclear magnetic resonance (NMR) assays. All of the enzyme activities associated with the glycogen cleavage and the Embden-Meyerhof pathway were determined as well as those involved in the formation of glycerol from dihydroxyacetone phosphate (glycerol-3-phosphate dehydrogenase and glycerol phosphatase) and the enzymes that catalyze the reactions leading to the production of ethanol (pyruvate decarboxylase and ethanol dehydrogenase). The key enzymes of the Entner-...Continue Reading

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Citations

May 20, 2006·Antonie van Leeuwenhoek·Weiwen ZhangFred J Brockman
Jun 22, 2001·FEBS Letters·A M MartinsA M Ponces Freire
Apr 13, 2004·Nature Biotechnology·John F HeidelbergClaire M Fraser
Mar 22, 2006·Current Microbiology·Patrícia MachadoClaudina Rodrigues-Pousada
Jun 15, 2013·The Biochemical Journal·Marta Sousa SilvaCarlos Cordeiro
Jul 17, 2001·European Journal of Biochemistry·A M MartinsA P Freire
Nov 28, 2013·Geobiology·E Dalla VecchiaR Bernier-Latmani
Aug 21, 2019·Proceedings of the National Academy of Sciences of the United States of America·Kasper U KjeldsenAndreas Schramm
Aug 21, 2003·Biochemical and Biophysical Research Communications·Chun-Jung ChenJean LeGall
Jan 30, 2004·Biochimica Et Biophysica Acta·Masaya KitamuraHideo Inoue
Oct 31, 2002·Journal of the American Chemical Society·Irwin A Rose, James S Nowick

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