Query: NC_011963:742158 Rhodobacter sphaeroides KD131 chromosome 1, complete sequence
Lineage: Rhodobacter sphaeroides; Rhodobacter; Rhodobacteraceae; Rhodobacterales; Proteobacteria; Bacteria
General Information: Halophilic, purple nonsulfur photosynthetic bacterium. Capable of producing high levels of biohydrogen (H2). Originally isolated from sea mud off the coast of DaeBu Island, South Korea. Bacteria belonging to the Rhodobacter group are metabolically versatile as they are able to grow using photosynthesis, chemosynthesis, and usually can grow under both anaerobic and aerobic conditions. The most extensively studied bacteria with regards to its photosynthetic capabilities which includes the structure, function and regulation of its photosynthetic membranes, its mechanisms of CO2 and nitrogen fixation, cytochrome diversity and its electron transport systems. It can grow aerobically and anaerobically in the light and anaerobically in the dark. It produces an intracytoplasmic membrane system consisting of membrane invaginations where the light harvesting complexes (LH1 and LH2) and the reaction center are synthesized. Furthermore, it has the ability to detoxify metal oxides and oxyanions and hence has a role in bioremediation.
Subject: NC_010175:1603500 Chloroflexus aurantiacus J-10-fl, complete genome
Lineage: Chloroflexus aurantiacus; Chloroflexus; Chloroflexaceae; Chloroflexales; Chloroflexi; Bacteria
General Information: Chloroflexus aurantiacus J-10-fl (DSM 635) was isolated from the Hakone hot spring area in Japan. This organism is one of the deepest branching phototrophs, and has some characteristics of both green non-sulfur and purple photosynthetic bacteria. These thermophiles live in hot springs of neutral to high pH and grow in mats, typically as the lowest layer in the mat with cyanobacteria above them, or as filamentous tendrils. The bacterium grows as a photoheterotroph and consumes the organic products the cyanobacteria produce, although it can also be photoautotrophic under anaerobic conditions and chemoorganotrophic under aerobic conditions. Like other green sulfur bacteria, the light-harvesting apparatus exists in chlorosomes, which consists of reaction centers surround by a protein-stabilized glycolipid monolayer, at the inner surface of the cytoplasmic membrane, although the reaction centers are more similar to the type II systems found in cyanobacteria than the type I systems found in green-sulfur bacteria. The multicellular filaments this organism produces are capable of gliding motility.