Magnetococcus marinus

Magnetococcus marinus
Scientific classification
Domain:	Bacteria
Phylum:	Proteobacteria
Class:	Alphaproteobacteria
Subclass:	Magnetococcidae
Order:	Magnetococcales
Family:	Magnetococcaceae
Genus:	Magnetococcus

Magnetococcus marinus is a species of Alphaproteobacteria that has the peculiar ability to form a structure called a magnetosome, a membrane-encased, single-magnetic-domain mineral crystal formed by biomineralisation, which allows the cells to orient along the Earth’s geomagnetic field.^[1]

It is a basal group in the Alphaproteobacteria.

Schematic ribosomal RNA phylogeny of Alphaproteobacteria

Magnetococcidae

Magnetococcus marinus

Caulobacteridae

	Holosporales

	Hyphomicrobiales, Rhodobacteraceae, Rhodospirillales, Sphingomonadales, etc.

Rickettsidae

Pelagibacterales

Pelagibacteraceae	Pelagibacter

	Subgroups Ib, II, IIIa, IIIb, IV and V

Rickettsiales

Proto-mitochondria

Anaplasmataceae

Neorickettsia

Wolbachia

	Anaplasma

	Ehrlichia

Midichloriaceae

Midichloria

Rickettsiaceae

	Orientia

	Rickettsia

The cladogram of Rickettsidae has been inferred by Ferla et al. ^[2] from the comparison of 16S + 23S ribosomal RNA sequences.

References

^ Bazylinski, D. A.; Williams, T. J.; Lefevre, C. T.; Berg, R. J.; Zhang, C. L.; Bowser, S. S.; Dean, A. J.; Beveridge, T. J. (2012). "Magnetococcus marinus gen. nov., sp. nov., a marine, magnetotactic bacterium that represents a novel lineage (Magnetococcaceae fam. Nov., Magnetococcales ord. Nov.) at the base of the Alphaproteobacteria". International Journal of Systematic and Evolutionary Microbiology. 63 (Pt 3): 801–8. doi:10.1099/ijs.0.038927-0. PMID 22581902.
^ Ferla MP, Thrash JC, Giovannoni SJ, Patrick WM (2013). "New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and phylogenetic instability". PLOS ONE. 8 (12): e83383. Bibcode:2013PLoSO...883383F. doi:10.1371/journal.pone.0083383. PMC 3859672. PMID 24349502.

External links

Type strain of Magnetococcus marinus at BacDive - the Bacterial Diversity Metadatabase

[1] Bazylinski, D. A.; Williams, T. J.; Lefevre, C. T.; Berg, R. J.; Zhang, C. L.; Bowser, S. S.; Dean, A. J.; Beveridge, T. J. (2012). "Magnetococcus marinus gen. nov., sp. nov., a marine, magnetotactic bacterium that represents a novel lineage (Magnetococcaceae fam. Nov., Magnetococcales ord. Nov.) at the base of the Alphaproteobacteria". International Journal of Systematic and Evolutionary Microbiology. 63 (Pt 3): 801–8. doi:10.1099/ijs.0.038927-0. PMID 22581902.

[Ferla2013-2] Ferla MP, Thrash JC, Giovannoni SJ, Patrick WM (2013). "New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and phylogenetic instability". PLOS ONE. 8 (12): e83383. Bibcode:2013PLoSO...883383F. doi:10.1371/journal.pone.0083383. PMC 3859672. PMID 24349502.

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