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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 crystals formed by biomineralisation, which allows the cells to orientate along the Earth’s geomagnetic field.[1]

It is a basal group in the Alphaproteobacteria.

Schematic ribosomal RNA phylogeny of Alphaproteobacteria

  Magnetococcus marinus


  Rhodospirillales, Sphingomonadales,
  Rhodobacteraceae, Rhizobiales, etc.




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












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


  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. 
  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. doi:10.1371/journal.pone.0083383. PMC 3859672Freely accessible. PMID 24349502.