Intra- and inter-serotypic recombinations in the 5΄ UTR-VP4 region of Echovirus 30 strains

Arch Virol. 2018 Feb;163(2):365-375. doi: 10.1007/s00705-017-3600-1. Epub 2017 Oct 30.

Abstract

Recombination has been recognized as a major mechanism of evolution in enteroviruses. The Echovirus 30 (E-30) strain Gior was sequenced and phylogenetically compared to all available E-30 sequences to detect recombination events between the 5΄UTR and VP1 genomic regions. The comparison of phylogenetic trees of the 5΄UTR and VP1 revealed incongruences concerning strains, lineages and sub-lineages. Comparative analysis of 62 E-30 sub-genomic sequences revealed six different recombination events that almost all occurred in the same region, having a start point in the 3΄end of the 5΄ UTR and end point in VP4. The only exception was the sub-lineage of Gior for which both borders of recombination were located in the 5΄UTR. These results describe for the first time recombination events in this region in circulating EV-B strains, revealing the exact points of these recombination events, highlighting the impact of such events on the evolution and epidemiology of enteroviruses.

MeSH terms

  • 5' Untranslated Regions
  • Echovirus Infections / virology*
  • Enterovirus B, Human / classification
  • Enterovirus B, Human / genetics*
  • Enterovirus B, Human / isolation & purification
  • Enterovirus B, Human / physiology
  • Evolution, Molecular
  • Genome, Viral
  • Humans
  • Phylogeny
  • RNA, Viral / genetics
  • Recombination, Genetic*
  • Serogroup
  • Viral Proteins / genetics*
  • Viral Proteins / metabolism

Substances

  • 5' Untranslated Regions
  • RNA, Viral
  • Viral Proteins