Query: NC_008786:1767315 Verminephrobacter eiseniae EF01-2, complete genome Lineage: Verminephrobacter eiseniae; Verminephrobacter; Comamonadaceae; Burkholderiales; Proteobacteria; Bacteria General Information: This species was isolated from the kidney of the earthworm Eisenia foetida. Evidence based on curing experiments, Acidovorax-specific probes, and 16S phylogeny, indicate that earthworm egg capsules contain high numbers of the bacterial endosymbiont. Juvenile earthworms are colonized during embryonic development within the egg capsule, and failing this are not likely to acquire the symbiont by association with colonized adults or their bedding.
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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.