Query: NC_008609:708886 Pelobacter propionicus DSM 2379, complete genome
Lineage: Pelobacter propionicus; Pelobacter; Pelobacteraceae; Desulfuromonadales; Proteobacteria; Bacteria
General Information: Common environmental anaerobe. The genus Pelobacter encompasses a unique group of fermentative microorganisms in the delta-proteobacteria. This species is ubiquitous in both marine and fresh water, and in anaerobic sedmiments. It is able to convert the unsaturated hydrocarbon acetylene to to acetate and ethanol via acetylaldehyde as an intermediate. These microorganisms may survive in some sediments as an Fe(III) or elemental sulfur reducer as well as growing fermentatively as an ethanol-oxidizing acetogen.
Subject: NC_012633:928500 Rickettsia africae ESF-5, complete genome
Lineage: Rickettsia africae; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria
General Information: This organism was isolated from a cattle tick, Amblyomma variegatum, collected in Ethiopia. This organism, a member of the spotted fever group of the Rickettsiales, is found in sub-Saharan Africa and the Caribbean. Rickettsia africae causes a flu-like illness, characterized by a mild fever and severe headache, without the skin rash common to other spotted fever group Rickettsia species. Members of this genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, are obligate intracellular pathogens. In both groups, the bacteria are transmitted via an insect, usually a tick, to a host organism where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms.