Shewanella oneidensis MR-1

Names Shewanella oneidensis MR-1
Accession numbers NC_004347, NC_004349
Background Shewanella oneidensis is an important model organism for bioremediation studies because of its diverse respiratory capabilities.S.oneidensis is a non-pathogenic gram negative microbe which can grow both aerobically and anaerobically utilising a diversity of electron acceptors (nitrite, nitrate, thiosulfate, iron, manganese, uranium) and presents a unique opportunity to investigate how environmental conditions alter the biology and ecology of a microorganism.S.oneidensis has the ability to use more than ten different elements to generate energy and in the process modifies both the chemical form and subsequent environmental behavior. Shewanella renders uranium immobile in sediments and could prevent leaching into nearby rivers and precipitate out of groundwater so that they can be isolated, the organism also breaks down chromium, which the World Health Organisation lists as a cancer-causing agent.The chemical reaction that reduces metals is relatively straightforward, but the details of how the organism makes this happen are a mystery, further research is necessary as to how the bacterium switches from consuming oxygen to consuming metals once the oxygen in its environment is depleted.(From (BacMap)
Strain MR-1
Complete Yes
Sequencing centre (12-SEP-2002) The Institute for Genomic Research, 9712 Medical Center Dr., Rockville, MD 20850, USA
(25-OCT-2002) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method NA
Isolation site "Sediment; anaerobic; Mn(IV) reduction, Oneida lake in New York"
Isolation country USA
Number of replicons 2
Gram staining properties Negative
Shape Bacilli
Mobility Yes
Flagellar presence Yes
Number of membranes 2
Oxygen requirements Facultative
Optimal temperature NA
Temperature range Mesophilic
Habitat Multiple
Biotic relationship Free living
Host name NA
Cell arrangement Pairs, Singles
Sporulation Nonsporulating
Metabolism Metal reducer
Energy source Heterotroph
Diseases Rare opportunistic pathogen of humans
Pathogenicity No