Shewanella denitrificans: Difference between revisions
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==Genome structure== | ==Genome structure== | ||
Circular, 4545906 bases, 84% coding (3754 of 3905 genes) | |||
DOE Joint Genome Institute/Pacific Northwest National Laboratory | |||
==Cell structure and metabolism== | ==Cell structure and metabolism== | ||
Revision as of 02:26, 1 June 2007
A Microbial Biorealm page on the genus Shewanella denitrificans
Classification
Higher order taxa
Bacteria, Proteobacteria, Gammaproteobacteria, Alteromonadales, Shewanellaceae
Species
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NCBI: Taxonomy |
Shewanella denitrificans
Description and significance
The Shewanella genus is a diverse group of marine gamma-proteobacteria, ranging from psychrophilic, to piezophilic, to psychrotolerant, to mesophillic. Some species are noted for their pathogenicity, still others are studied for their diversity of electron transport systems. They are capable of anaerobic respiration using a large spectrum of electron receptors in addition to aerobic respiration. Shewanella denitrificans is noted primarily for its ability to vigorously denitrify nitrate and nitrite, converting these molecules to gaseous nitrogen. Although there are many other members of the genus that are denitrifiers, S. denitrificans is unique in its enthusiastic denitrification. It was first described in 2002 by Brettar et. al., who aligned it with the genus and distinguished it as a novel species based on physiological and 16S rRNA comparisons, among others. Like the other organisms in its genus, S. denitrificans is a rod shaped, gram-negative bacterium with polar flagella. It is found at the oxic-anoxic interface and was first isolated from the Gotland Deep, a basin in the Baltic Sea. It was first isolated as three strains, called OS217T, S220 and OS226, which were phylogenetically identified as a single species. S. denitrificans is a mesophilic organism with an optimum growth temperature of 20-25 C. Based on its fatty acid composition, S. denitrificans is most related to S. baltica, S. putrefaciens and S. japonica within the Shewanella genus, but has a different growth optimum from these species. In addition, its enzymatic activities, electron acceptors, and utilization of substrates distinguish it from the others in its genus.
Genome structure
Circular, 4545906 bases, 84% coding (3754 of 3905 genes) DOE Joint Genome Institute/Pacific Northwest National Laboratory
Cell structure and metabolism
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.
Ecology
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Application to Biotechnology
Does this organism produce any useful compounds or enzymes? What are they and how are they used?
Current Research
Enter summaries of the most recent research here--at least three required
References
Edited by Karen Rossmassler, student of Rachel Larsen and Kit Pogliano
