Query: NC_008043:167108 Silicibacter sp. TM1040 mega plasmid, complete sequence
Lineage: Ruegeria; Ruegeria; Rhodobacteraceae; Rhodobacterales; Proteobacteria; Bacteria
General Information: This strain was isolated from a culture of the dinoflagellate Pfiesteria piscicida CCMP1830 which has been implicated in many large scale algal blooms resulting in increased mortality in fish. The bacteria are attached to the surface of the dinoflagellate and in some ways allow the dinoflagellate to grow as those lacking the bacteria die off. The bacterium also chemotaxes towards the dinoflagellate product DMSP (dimethylsulfoniopropionate) and metabolizes it. DMSP is a major source of sulfur in marine ecosystems and plays a role in the sulfur biogeochemical cycle. The implication is a tight association between these important dinoflagellates and this marine bacterium.
Subject: NC_005861:2120633 Candidatus Protochlamydia amoebophila UWE25, complete genome
Lineage: Protochlamydia amoebophila; Protochlamydia; Parachlamydiaceae; Chlamydiales; Chlamydiae; Bacteria
General Information: An endosymbiont of free-living amoebae (Acanthamoeba sp. endosymbiont UWE25) and implicated as a potential human pathogen this strain is an environmental isolate. Amoeba endosymbiont. Bacteria belonging to the Chlamydiales group are obligate intracellular parasites of eukaryotic cells. They are found within vertebrates, invertebrate cells, and amoebae hosts. Chlamydiae are one of the commonest causes of sexually transmitted diseases (STDs) and if left untreated may cause infertility in women. They are transmitted by direct contact or aerosols, and can cause various diseases, while also being able to coexist with the host in an apparently asymptomatic state. Candidatus Protochlamydia amoebophila, originally Parachlamydia is an endosymbiont of free-living amoebae (Acanthamoeba). This organism is an obligate intracellular endosymbiont and lives in small inclusions dispersed throughout the host cell.