Query: NC_008554:3177723 Syntrophobacter fumaroxidans MPOB, complete genome
Lineage: Syntrophobacter fumaroxidans; Syntrophobacter; Syntrophobacteraceae; Syntrophobacterales; Proteobacteria; Bacteria
General Information: This organism is a syntrophic propionate-oxidizing bacterium isolated from granular sludge from an anaerobic sludge bed reactor treating sugar-beet processing wastewater. Propionate-oxidizing bacterium. This organism is able to oxidize propionate when grown in co-culture with hydrogen-consuming methanogens (syntrophic metabolism). This organism can also ferment fumarate when not in co-culture.
Subject: NC_018870:1417851 Thermacetogenium phaeum DSM 12270 chromosome, complete genome
Lineage: Thermacetogenium phaeum; Thermacetogenium; Thermoanaerobacteraceae; Thermoanaerobacterales; Firmicutes; Bacteria
General Information: Nitrogen fixation. Thermophilic strictly anaerobic bacterium oxidizing acetate to CO2 in syntrophic association with a methanogenic partner. Capable of growing with various substrates such as alcohols and methylated nitrogen compounds, and to reduce sulfate in the presence of acetate. Isolated from sludge of an anaerobic digester run at 58 degrees C. Thermacetogenium phaeum is a strictly anaerobic, homoacetogenic bacterium. It is exceptional because it can use the homoacetogenic Wood-Ljungdahl (CO- dehydrogenase) pathway both for acetate formation and acetate oxidation. Acetate oxidation is possible only in syntrophic cooperation with a methanogenic partner which maintains a low hydrogen and/or formate concentration in the coculture. With this, the bacterium operates close to the thermodynamic equilibrium of substrate conversion, similar to other syntrophically fermenting bacteria such as Syntrophomonas wolfei the genomes of which have been sequenced as well in the recent past.