Query: NC_016050:938000 Rickettsia japonica YH, complete genome Lineage: Rickettsia japonica; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria General Information: The causal agent of Oriental Spotted Fever. Human pathogen. Rickettsiae are obligate intracellular Gram-negative bacteria mostly found in arthropods, some of which cause mild to severe diseases in humans. Rickettsia japonica strain YH was isolated in 1985 from the blood of a patient with febrile exanthematous illness in Japan.
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General Information: Heliobacterium modesticaldum strain Ice1, the type strain of this species, was isolated from Icelandic hot spring volcanic soils. It grows optimally above 50 degrees Celsius, grows best photoheterotrophically, but can grow in the dark chemotrophically on pyruvate. Phototrophic thermophile. This organism is an anoxygenic phototroph isolated from hot spring microbial mats and volcanic soil. Cell wall structure, the ability to form endospores, and 16S ribosomal RNA analysis place Heliobacterium modesticaldum in a family of phototrophic bacteria related to the Clostridia. Heliobacterium modesticaldum is able to fix nitrogen and may contribute significantly to the nitrogen availability in microbial mats.