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Energetics and kinetics of lactate fermentation to acetate and propionate via methylmalonyl-CoA or acrylyl-CoA

Energetics and kinetics of lactate fermentation to acetate and propionate via methylmalonyl-CoA or acrylyl-CoA

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SEELIGER, Sabine, Peter H. JANSSEN, Bernhard SCHINK, 2002. Energetics and kinetics of lactate fermentation to acetate and propionate via methylmalonyl-CoA or acrylyl-CoA. In: FEMS Microbiology Letters. 211(1), pp. 65-70. ISSN 0378-1097

@article{Seeliger2002Energ-7451, title={Energetics and kinetics of lactate fermentation to acetate and propionate via methylmalonyl-CoA or acrylyl-CoA}, year={2002}, doi={10.1016/S0378-1097(02)00651-1}, number={1}, volume={211}, issn={0378-1097}, journal={FEMS Microbiology Letters}, pages={65--70}, author={Seeliger, Sabine and Janssen, Peter H. and Schink, Bernhard} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/7451"> <dc:contributor>Schink, Bernhard</dc:contributor> <dc:rights>deposit-license</dc:rights> <dcterms:abstract xml:lang="eng">Fermentation balances and growth yields were determined with various bacteria fermenting lactate to acetate plus propionate either via methylmalonyl-CoA or via acrylyl-CoA. All strains fermented lactate to acetate plus propionate at approximately a 1:2 ratio. Growth yields of Propionibacterium freudenreichii were more than twice as high as those of Clostridium homopropionicum or Veillonella parvula. Hydrogen was formed as a side product to a significant extent only by V. parvula and Pelobacter propionicus; the latter formed hydrogen preferentially when using ethanol as substrate. Acrylyl-CoA reductase of C. homopropionicum and Clostridium neopropionicum was found nearly exclusively in the cytoplasm thus confirming that this reduction step is unlikely to be involved in energy conservation. C. homopropionicum exhibited higher KS and higher Wmax values, as well as higher specific substrate turnover rates than P. freudenreichii. The results allow us to conclude that C. homopropionicum using the acrylyl-CoA pathway with low growth yield obtains its specific competitive advantage compared to P. freudenreichii not through higher substrate affinity or metabolic shift toward enhanced acetate-plus-hydrogen formation but through faster specific substrate turnover.</dcterms:abstract> <dc:format>application/pdf</dc:format> <dcterms:bibliographicCitation>First publ. in: FEMS Microbiology Letters 211 (2002), pp. 65-70</dcterms:bibliographicCitation> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103416863-3868037-7"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:34:32Z</dc:date> <dc:contributor>Seeliger, Sabine</dc:contributor> <dc:creator>Schink, Bernhard</dc:creator> <dc:language>eng</dc:language> <dcterms:issued>2002</dcterms:issued> <dc:creator>Seeliger, Sabine</dc:creator> <dc:contributor>Janssen, Peter H.</dc:contributor> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/7451"/> <dc:creator>Janssen, Peter H.</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:34:32Z</dcterms:available> <dcterms:title>Energetics and kinetics of lactate fermentation to acetate and propionate via methylmalonyl-CoA or acrylyl-CoA</dcterms:title> </rdf:Description> </rdf:RDF>

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