Query: NC_009092:179226 Shewanella loihica PV-4, complete genome Lineage: Shewanella loihica; Shewanella; Shewanellaceae; Alteromonadales; Proteobacteria; Bacteria General Information: This strain is an environmental isolate from the Naha Vents, Hawaii, in the Pacific Ocean. Psychrotolerant bacterium. This genus includes species that inhabit a wide range of environments and are capable of utilizing a wide variety of electron acceptors during anaerobic respiration including some insoluble metal oxides while using very few carbon sources such as lactate or acetate. This group of organisms have been studied extensively for their electron transport systems. Shewanella loihica is a psychrotolerant deep sea bacterium. This organism is able to reduce iron, manganese and uranium and may be useful for bioremediation at low temperatures.
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General Information: This red-pigmented organism's name means "strange berry that withstands radiation", marking the fact that this organism is one of the most radiation-resistant known. It can tolerate radiation levels at 1000 times the levels that would kill a human and it was originally isolated in 1956 from a can of meat that had been irradiated with X-rays. The resistance to radiation may reflect its resistance to dessication, which also causes DNA damage. This organism may be of use in cleaning up toxic metals found at nuclear weapons production sites due to the radiation resistance. This bacterium is also a highly efficient transformer, and can readily take up exogenous DNA from the environment, which may also aid DNA repair. This organism carries multiple copies of many DNA repair genes, suggesting a robust system for dealing with DNA damage. The recombination system may rely on multiple copies of various repeat elements found throughout the genome.