Query: NC_018664:1 Clostridium acidurici 9a chromosome, complete genome
Lineage: Gottschalkia acidurici; Gottschalkia; ; Clostridiales; Firmicutes; Bacteria
General Information: Clostridium acidiurici is an obligate anaerobic Gram-positive bacterium that is motile and spore-forming. It can be isolated from almost every soil but can also be found in the intestinal tract of birds. It is able to use purines like uric acid as sole carbon, nitrogen and energy source to build ammonia, carbon dioxide and acetic acid. Unlike most other Clostridia it is a specialist and not able to grow on sugars or different other substrates than purines.
Subject: NC_011959:972798 Thermomicrobium roseum DSM 5159, complete genome
Lineage: Thermomicrobium roseum; Thermomicrobium; Thermomicrobiaceae; Thermomicrobiales; Chloroflexi; Bacteria
General Information: Thermomicrobium roseum DSM 5159 was isolated from Yellowstone National Park, USA. Obligate thermophile with unusual cell wall structure. Thermomicrobium roseum is a red-pigmented, rod-shaped, Gram-negative extreme thermophile that possesses both an atypical cell wall composition and an unusual cell membrane that is composed entirely of long-chain 1,2-diols. Analyses of environmental sequences from hot spring environments show that T.roseum displays a low quantity but ubiquitous presence in top layers of microbial mats. Few standard housekeeping genes are found on the megaplasmid, however, it does encode a complete system for chemotaxis including both chemosensory components and an entire flagellar apparatus. T. roseum oxidizes CO aerobically, making it the first thermophile known to do so. In addition, is is propose that glycosylation of its carotenoids plays a crucial role in the adaptation of the cell membrane to this bacterium's thermophilic lifestyle. Because T. roseum is a deep-branching member of this phylum, eventhough this species is not photosynthetic, analysis of the genome provides some insight into the origins of photosynthesis in the Chloroflexi.