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Título

Evolution of gene order conservation in prokaryotes

Autor Tamames, Javier
Fecha de publicación 1-jun-2001
EditorBioMed Central
Citación Genome Biology 2001, 2(6)
Resumen[Results] Gene order is extensively conserved between closely related species, but rapidly becomes less conserved among more distantly related organisms, probably in a cooperative fashion. This trend could be universal in prokaryotic genomes, as archaeal genomes are likely to behave similarly to bacterial genomes. Gene order conservation could therefore be used as a valid phylogenetic measure to study relationships between species. Even between very distant species, remnants of gene order conservation exist in the form of highly conserved clusters of genes. This suggests the existence of selective processes that maintain the organization of these regions. Because the clusters often span more than one operon, common regulation probably cannot be invoked as the cause of the maintenance of gene order.
[Conclusions] Gene order conservation is a genomic measure that can be useful for studying relationships between prokaryotes and the evolutionary forces shaping their genomes. Gene organization is extensively conserved in some genomic regions, and further studies are needed to elucidate the reason for this conservation.
Descripción The electronic version of this article is the complete one and can be found online at http://genomebiology.com/2001/2/6/research/0020
URI http://hdl.handle.net/10261/1412
ISSN1465-6914
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