Publikation: Propionate acts as earboxylic group acceptor in aspartate fermentation by ropionibacterium freudenreichii
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Cells of Propionibacterium freudenreichii ssp. shermanii and ssp. freudenreichii did not show significant growth or product formation in a mineral medium with 10 mM aspartate or 10 mM fumarate, vitamins, and a small amount (0.05% w/v) of yeast extract. In the presence of added propionate, growth with aspartate or fumarate was possible, and depended strictly on the amount of propionate provided, according to the equation: 3 aspartate + propionate ~ 3 succinate + acetate + CO2 + 3 NH3. Cocultures of P.freudenreichii with the succinate-decarboxylating strain Ft2 converted 3 aspartate stoichiometrically to acetate and 2 propionate. High activity of methylmalonyl-CoA: pyruvate transcarboxylase, and lack of methylmalonyl-CoA decarboxylase and oxaloacetate decarboxylase activity in cell-free extracts of aspartate-grown cells indicated that failure to use aspartate as sole substrate was due to the inability of these strains to catalyze a net decarboxylation of C4- dicarboxylic acids.
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ROSNER, Bettina M., Bernhard SCHINK, 1990. Propionate acts as earboxylic group acceptor in aspartate fermentation by ropionibacterium freudenreichii. In: Archives of Microbiology. 1990, 155(1), pp. 46-51. ISSN 0302-8933. eISSN 1432-072XBibTex
@article{Rosner1990Propi-7341, year={1990}, title={Propionate acts as earboxylic group acceptor in aspartate fermentation by ropionibacterium freudenreichii}, number={1}, volume={155}, issn={0302-8933}, journal={Archives of Microbiology}, pages={46--51}, author={Rosner, Bettina M. and Schink, Bernhard} }
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