Query: NC_006677:1596560 Gluconobacter oxydans 621H, complete genome Lineage: Gluconobacter oxydans; Gluconobacter; Acetobacteraceae; Rhodospirillales; Proteobacteria; Bacteria General Information: Industrially useful bacterium. Gluconobacter oxydans is a member of the Acetobacteraceae family within the alpha proteobacteria and can be isolated from flowers, fruits, and fermented beverages. This organism uses membrane-associated dehydrogenases to incompletely oxidize a wide variety of carbohydrates and alcohols. Oxidation occurs in the periplasm with the products being released into the medium via outer membrane porins and the electrons entering the electron transport chain. Able to oxidize large amounts of substrates, making it useful for industrial purposes. Among other applications, it has been used to produce 2-ketogluconic for iso-ascorbic acid production, 5-ketogluconic acid from glucose for tartaric acid production, and L-sorbose from sorbitol for vitamin C synthesis.
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General Information: Lignocellulosic biomass has great potential as an abundant and renewable source of fermentable sugars through enzymic saccharification. Clostridium stercorarium is a catabolically versatile bacterium producing a wide range of hydrolases for degradation of biomass. Together with Clostridium thermocellum, Clostridium aldrichii and other cellulose degraders, it forms group I of the clostridia. It is moderately thermophilic, with an optimum growth temperature of 65 degrees C, and has repeatedly been isolated from self-heated compost. The two-component cellulase system of C. stercorarium has been investigated thoroughly. Due to its ability to utilize the various polysaccharides present in biomass it is especially suited for the fermentation of hemicellulose to organic solvents. Some isolates have been used in Japan in a single-step ethanol-fermenting pilot-process with lignocellulosic biomass as substrate.