Query: NC_016024:156000 Candidatus Chloracidobacterium thermophilum B chromosome chromosome
Lineage: Chloracidobacterium thermophilum; Chloracidobacterium; Acidobacteriaceae; ; Acidobacteria; Bacteria
General Information: This organism produces bacteriochlorophyll a and c under oxic conditions and represents a new group of photosynthetic bacteria. The only known chlorophototroph in the phylum Acidobacteria. Aerobic photoheterotroph that lacks the ability to synthesize several essential nutrients. Naturally inhabits microbial mats of alkaline siliceous hot springs in Yellowstone National Park.
Subject: NC_018870:81396 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.