論文

査読有り
2016年2月

The Landscape of Realized Homologous Recombination in Pathogenic Bacteria

MOLECULAR BIOLOGY AND EVOLUTION
  • Koji Yahara
  • ,
  • Xavier Didelot
  • ,
  • Keith A. Jolley
  • ,
  • Ichizo Kobayashi
  • ,
  • Martin C. J. Maiden
  • ,
  • Samuel K. Sheppard
  • ,
  • Daniel Falush

33
2
開始ページ
456
終了ページ
471
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/molbev/msv237
出版者・発行元
OXFORD UNIV PRESS

Recombination enhances the adaptive potential of organisms by allowing genetic variants to be tested on multiple genomic backgrounds. Its distribution in the genome can provide insight into the evolutionary forces that underlie traits, such as the emergence of pathogenicity. Here, we examined landscapes of realized homologous recombination of 500 genomes from ten bacterial species and found all species have "hot" regions with elevated rates relative to the genome average. We examined the size, gene content, and chromosomal features associated with these regions and the correlations between closely related species. The recombination landscape is variable and evolves rapidly. For example in Salmonella, only short regions of around 1 kb in length are hot whereas in the closely related species Escherichia coli, some hot regions exceed 100 kb, spanning many genes. Only Streptococcus pyogenes shows evidence for the positive correlation between GC content and recombination that has been reported for several eukaryotes. Genes with function related to the cell surface/membrane are often found in recombination hot regions but E. coli is the only species where genes annotated as "virulence associated" are consistently hotter. There is also evidence that some genes with "housekeeping" functions tend to be overrepresented in cold regions. For example, ribosomal proteins showed low recombination in all of the species. Among specific genes, transferrin-binding proteins are recombination hot in all three of the species in which they were found, and are subject to interspecies recombination.

リンク情報
DOI
https://doi.org/10.1093/molbev/msv237
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26516092
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000369993600014&DestApp=WOS_CPL
ID情報
  • DOI : 10.1093/molbev/msv237
  • ISSN : 0737-4038
  • eISSN : 1537-1719
  • PubMed ID : 26516092
  • Web of Science ID : WOS:000369993600014

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