Biology:Vitreoscilla

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Short description: Genus of bacteria


Vitreoscilla
Scientific classification
Domain:
Bacteria
Phylum:
Pseudomonadota
Class:
Betaproteobacteria
Order:
Neisseriales
Family:
Neisseriaceae
Genus:
Vitreoscilla

Vitreoscilla is a genus of Gram-negative aerobic bacterium.[1] The bacterial haemoglobin (VHb) was first discovered from Vitreoscilla, and VHb is found to have a wide range of biological and biotechnological applications including promotion of cell growth, protein synthesis, metabolite productivity, respiration, cellular detoxification, fermentation, and biodegradation.[2]

Etymology

The generic name is derived from the Latin adjective vitreus, which means clear or transparent; and the noun oscillum, meaning a swing. Thus Vitreoscilla is used to describe the bacterium as the transparent swing or oscillator, the way it exhibits locomotion.

Species

There are three valid species under the genus, namely[3]

  • Vitreoscilla beggiatoides Pringsheim 1949 (type species)
  • Vitreoscilla filiformis (ex Pringsheim 1951) Strohl et al. 1986
  • Vitreoscilla stercoraria Pringsheim 1951

Structure

Members of Vitreoscilla are obligate aerobic bacteria, which are morphologically colourless filaments that contain cells with diameters of 1-3 μm and 1-12 μm long. Each filament may contain from 1 to 40 cells. Locomotion is by gliding, and no special locomotor organelles are present. The cell walls are composed of the amino acids alanine, glutamate, and diaminopimelic acid, with approximate molar ratios of 2:1:1.[4][5]

Importance

Vitreoscilla bacteria have a unique property in that they produces a type of haemoglobin, VHb. This molecule unlike classic haemoglobin is composed only of a single globin molecule.[6] VHb is known to have a wide variety of functions including improving cell growth, protein synthesis, enhanced metabolism, nitric oxide detoxification, increase respiration and production of ethanol.[2] Some of these properties have been exploited as potential benefits in biotechnology and industry.[7][8]

See also

References

  1. ↑ Approved Lists of Bacterial Names (Amended). Washington, DC: ASM Press. 1989. ISBN 978-1-55581-014-6. https://www.ncbi.nlm.nih.gov/books/NBK814/. 
  2. ↑ 2.0 2.1 "Recent advances in understanding the structure, function, and biotechnological usefulness of the hemoglobin from the bacterium Vitreoscilla". Biotechnol Lett 33 (9): 1705–1714. 2011. doi:10.1007/s10529-011-0621-9. PMID 21603987. 
  3. ↑ Euzéby JP. "List of Prokaryotic names with Standing in Nomenclature - Genus Vitreoscilla". LPSN. https://lpsn.dsmz.de/genus/vitreoscilla. 
  4. ↑ "Observations on the motility and the structure of Vitreoscilla". Can J Microbiol 7: 329–339. 1961. doi:10.1139/m61-040. PMID 13695850. 
  5. ↑ Fackrell H (1998). "Vitreoscilla". uwindsor.ca. University of Windsor. http://web2.uwindsor.ca/courses/biology/fackrell/Microbes/15700.htm. 
  6. ↑ "The Biochemistry of Vitreoscilla hemoglobin". Computational and Structural Biotechnology Journal 3 (4): e201210002. 2012. doi:10.5936/csbj.201210002. 
  7. ↑ "Progress in research of Vitreoscilla hemoglobin and Vitreoscilla hemoglobin gene". Wei Sheng Wu Xue Bao 39 (5): 478–482. 1999. PMID 12555532. 
  8. ↑ "Shedding light on the role of Vitreoscilla hemoglobin on cellular catabolic regulation by proteomic analysis". Int J Biol Sci 4 (2): 71–82. 2008. doi:10.7150/ijbs.4.71. PMID 18345284. 

External links

Wikidata ☰ Q16993450 entry



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