Plesiomonas shigelloides

From MicrobeWiki, the student-edited microbiology resource

Classification

Bacteria; Proteobacteria; Gamma Proteobacteria; Enterobacteriales; Enterobacteriaceae

Species

NCBI: Taxonomy

Plesiomonas shigelloides

Description and Significance

Describe the appearance, habitat, etc. of the organism, and why you think it is important.

Plesiomonas shigelloides is a facultatively anaerobic chemo-organotrophic Gram-negative bacterium. Being that this organism is faculatively anaerobic means that it can use oxygen as a terminal electron acceptor when it is present, but also flawlessly switches to fermentation as a means of producing ATP when oxygen is absent. One study has shown that like many organisms, Plesiomonas shigelloides utilizes glucose as a source of carbon as well as energy source. However, what is somewhat odd, is that these particular organisms have a membrane bound mannose permease. It is unknown as to why this organism has the ability to take in mannose, but lacks the ability to use it constructively as a carbon or energy source. The lack of mannose isomerase (coverts mannose to its 2 epimer glucose) causes a build up of mannose 6-phosphate and subsequent death.

Genome Structure

Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?


Cell Structure, Metabolism and Life Cycle

Interesting features of cell structure; how it gains energy; what important molecules it produces.


Ecology and Pathogenesis

Habitat; symbiosis; biogeochemical significance; contributions to environment.
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.

References

[Sample reference] Takai, K., Sugai, A., Itoh, T., and Horikoshi, K. "Palaeococcus ferrophilus gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney". International Journal of Systematic and Evolutionary Microbiology. 2000. Volume 50. p. 489-500.

Author

Page authored by _____, student of Prof. Jay Lennon at Michigan State University.

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