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- SAR11_clade abstract "The SAR11 clade, or Pelagibacteraceae, defines a lineage of bacteria that is extremely common in the ocean. Bacteria in the SAR11 clade make up roughly one in three cells at the ocean's surface. Overall, SAR11 bacteria are estimated to make up between a quarter and a half of all prokaryotic cells in the ocean.SAR11 bacteria are classified as alphaproteobacteria, and include the highly abundant marine species Pelagibacter ubique. Bacteria in this clade are unusually small.Pelagibacter ubique and related species are oligotrophs — scavengers — and feed on dissolved organic carbon and nitrogen. They are unable to fix carbon or nitrogen, but can perform the TCA cycle with glyoxylate bypass and are able to synthesise all amino-acids, except glycine, and some cofactors. They also have an unusual and unexpected requirement for reduced sulfur.Pelagibacter ubique and members of the oceanic subgroup I possess gluconeogenesis but not a typical glycolysis pathway, whereas other subgroups are capable of typical glycolysis.Unlike Acaryochloris marina, it is non-photosynthetic, but possesses proteorhodopsin (incl. retinol biosynthesis) for ATP production."Pelagibacteraceae" appear to be basal to the other three families in the order Rickettsiales. The family derives its name from the type species Pelagibacter ubique. However, this species has not yet been validly published and, therefore, neither the familiar or the species has official taxonomic standing. Rickettsiales are currently defined by at least one shared feature: multiplying only inside host cells. If the position of "Pelagibacteraceae" is correct, it might be possible to derive unique insight into the evolution from free-living to parasitic and symbiotic.[citation needed]".
- SAR11_clade class Alphaproteobacteria.
- SAR11_clade domain Bacteria.
- SAR11_clade order Rickettsiales.
- SAR11_clade phylum Proteobacteria.
- SAR11_clade wikiPageID "25327558".
- SAR11_clade wikiPageRevisionID "592591625".
- SAR11_clade classificationStatus Candidatus.
- SAR11_clade classis Alphaproteobacteria.
- SAR11_clade domain Bacteria.
- SAR11_clade hasPhotoCollection SAR11_clade.
- SAR11_clade name "Pelagibacteraceae".
- SAR11_clade ordo Rickettsiales.
- SAR11_clade phylum Proteobacteria.
- SAR11_clade subject Category:Proteobacteria.
- SAR11_clade type Bacteria.
- SAR11_clade type Species.
- SAR11_clade type Organism.
- SAR11_clade comment "The SAR11 clade, or Pelagibacteraceae, defines a lineage of bacteria that is extremely common in the ocean. Bacteria in the SAR11 clade make up roughly one in three cells at the ocean's surface. Overall, SAR11 bacteria are estimated to make up between a quarter and a half of all prokaryotic cells in the ocean.SAR11 bacteria are classified as alphaproteobacteria, and include the highly abundant marine species Pelagibacter ubique.".
- SAR11_clade label "SAR11 clade".
- SAR11_clade sameAs m.09g6p7z.
- SAR11_clade sameAs Q7388740.
- SAR11_clade sameAs Q7388740.
- SAR11_clade wasDerivedFrom SAR11_clade?oldid=592591625.
- SAR11_clade isPrimaryTopicOf SAR11_clade.
- SAR11_clade name "Pelagibacteraceae".