Shewanella amazonensis SB2B

Shewanella_amazonensis
Names Shewanella amazonensis SB2B
Accession numbers NC_008700
Background Shewanella are facultatively anaerobic, Gram-negative bacteria, motile by polar flagella, rod-like, and generally associated with aquatic or marine environments. They are capable of using a variety of compounds as electron acceptors, including oxygen, iron, manganese, uranium, nitrate, nitrite, fumarate, to name but a few. This ability makes Shewanella important for bioremediation of contaminated metals and radioactive wastes. The genus Shewanella comprises 36 recognized and hundreds of uncharacterized cultivable species. Strain SB2BT was isolated from Amazonian shelf coastal muds, in intertidal sediments, off the Amapa coast of Brazil, and is a highly active reducer of iron and manganese oxides, thiosulfate and elemental sulfur. Cells are rod-shaped, 2-3 um in length and 0.4-0.7 um in diameter, Gram-negative, facultatively anaerobic, polarly flagellated. No endospores nor capsules are formed. Cells are able to grow at mesophilic temperatures, with optimal growth observed at 37 C. Denitrifies nitrate to nitrite and nitrite to N2. Exhibits cytochrome oxidase, catalase and gelatinase activity, and produces hydrogen sulfide from thiosulfate. Haemolyses sheep blood cells and does not grow at NaCl concentrations above 3%. Utilizes acetate, succinate, fumarate and citrate as sole carbon sources as well as a few carbohydrates and amino acids. Very active in the reduction of iron, manganese and sulfur compounds. (HAMAP: SHEAM)
Taxonomy
Kingdom:Bacteria
Phylum:Proteobacteria
Class:Gammaproteobacteria
Order:Alteromonadales
Family:Shewanellaceae
Genus:Shewanella
Species:amazonensis
Strain SB2B
Complete Yes
Sequencing centre (13-DEC-2006) US DOE Joint Genome Institute, 2800 Mitchell Drive B100, Walnut Creek, CA 94598-1698, USA
(21-DEC-2006) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method Sanger
Isolation site Low salinity mud flat sediment, Cabo Cassipore, Amapa, Brazil
Isolation country Brazil
Number of replicons 1
Gram staining properties Negative
Shape Bacilli
Mobility Yes
Flagellar presence Yes
Number of membranes 2
Oxygen requirements Facultative
Optimal temperature 37.0
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 NA
Pathogenicity No