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Genome-scale phylogeny of the alphavirus genus suggests a marine origin.


ABSTRACT: The genus Alphavirus comprises a diverse group of viruses, including some that cause severe disease. Using full-length sequences of all known alphaviruses, we produced a robust and comprehensive phylogeny of the Alphavirus genus, presenting a more complete evolutionary history of these viruses compared to previous studies based on partial sequences. Our phylogeny suggests the origin of the alphaviruses occurred in the southern oceans and spread equally through the Old and New World. Since lice appear to be involved in aquatic alphavirus transmission, it is possible that we are missing a louse-borne branch of the alphaviruses. Complete genome sequencing of all members of the genus also revealed conserved residues forming the structural basis of the E1 and E2 protein dimers.

SUBMITTER: Forrester NL 

PROVIDER: S-EPMC3302268 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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Genome-scale phylogeny of the alphavirus genus suggests a marine origin.

Forrester N L NL   Palacios G G   Tesh R B RB   Savji N N   Guzman H H   Sherman M M   Weaver S C SC   Lipkin W I WI  

Journal of virology 20111221 5


The genus Alphavirus comprises a diverse group of viruses, including some that cause severe disease. Using full-length sequences of all known alphaviruses, we produced a robust and comprehensive phylogeny of the Alphavirus genus, presenting a more complete evolutionary history of these viruses compared to previous studies based on partial sequences. Our phylogeny suggests the origin of the alphaviruses occurred in the southern oceans and spread equally through the Old and New World. Since lice a  ...[more]

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