alexa Aerobiosis increases the genomic guanine plus cytosine content (GC\%) in prokaryotes.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Data Mining in Genomics & Proteomics

Author(s): Naya H, Romero H, Zavala A, Alvarez B, Musto H, Naya H, Romero H, Zavala A, Alvarez B, Musto H, Naya H, Romero H, Zavala A, Alvarez B, Musto H, Naya H, Romero H, Zavala A, Alvarez B, Musto H

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Abstract The huge variation in the genomic guanine plus cytosine content (GC\%) among prokaryotes has been explained by two mutually exclusive hypotheses, namely, selectionist and neutralist. The former proposals have in common the assumption that this feature is a form of adaptation to some ecological or physiological condition. On the other hand, the neutralist interpretation states that the variations are due only to different mutational biases. Since all of the traits that have been proposed by the selectionists either appeared to be limited to certain genera or were invalidated by the availability of more data, they cannot be considered as a selective force influencing the genomic GC\% across all prokaryotes. In this report we show that aerobic prokaryotes display a significant increment in genomic GC\% in relation to anaerobic ones. This is the first time that a link between a metabolic character and GC\% has been found, independently of phylogenetic relationships and with a statistically significant amount of data. This article was published in J Mol Evol and referenced in Journal of Data Mining in Genomics & Proteomics

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