tRNA Signatures Reveal a Polyphyletic Origin of SAR11 Strains among Alphaproteobacteria
نویسندگان
چکیده
منابع مشابه
tRNA Signatures Reveal a Polyphyletic Origin of SAR11 Strains among Alphaproteobacteria
Molecular phylogenetics and phylogenomics are subject to noise from horizontal gene transfer (HGT) and bias from convergence in macromolecular compositions. Extensive variation in size, structure and base composition of alphaproteobacterial genomes has complicated their phylogenomics, sparking controversy over the origins and closest relatives of the SAR11 strains. SAR11 are highly abundant, co...
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Self-splicing group I introns in tRNA anticodon loops have been found in diverse groups of bacteria (alpha, beta purple bacteria and cyanobacteria). In particular, the cyanobacterial tRNA(Leu)(UAA) group I introns have attracted considerable attention because of their presumed ancient origin and immobility. In this work, however, we identified tRNA(Leu)(UAA) group I introns in six out of 16 clo...
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BACKGROUND According to the endosymbiont hypothesis, the mitochondrial system for aerobic respiration was derived from an ancestral Alphaproteobacterium. Phylogenetic studies indicate that the mitochondrial ancestor is most closely related to the Rickettsiales. Recently, it was suggested that Candidatus Pelagibacter ubique, a member of the SAR11 clade that is highly abundant in the oceans, is a...
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ژورنال
عنوان ژورنال: PLoS Computational Biology
سال: 2014
ISSN: 1553-7358
DOI: 10.1371/journal.pcbi.1003454