NDLI: Molecular evolution of poxviruses

Content Provider	Springer Nature Link
Author	Babkin, I. V. Shchelkuv, S. N.
Copyright Year	2008
Abstract	Previous restriction fragment length polymorphism analysis divided variola virus (VARV) strains into two subtypes, one of which included West African and South American isolates. This allowed a dating to be introduced for the first time in estimation of the VARV evolution rate. The results were used to analyze the molecular evolution of the total family Poxviridae. Comparisons of the known nucleotide sequences were performed for the extended conserved central genome region in 42 orthopoxvirus strains and for the eight genes of multisubunit RNA polymerase in 65 viruses belonging to various genera of the family Poxviridae. Using the Bayesian dating method, the mutation accumulation rate of poxviruses was estimated at (1.7–8.8) × 10$^{−6}$ nucleotide substitutions per site per year. Computations showed that the modern poxvirus genera started diverging from an ancestral virus more than 200 thousand years ago and that an ancestor of the genus Orthopoxvirus emerged 131 ± 45 thousand years ago. The other genera of mammalian poxviruses with a low GC content diverged approximately 110–90 thousand years ago. The independent evolution of VARV started 3.4 ± 0.8 thousand years ago. It was shown with the example of VARV and the monkeypox virus (MPXV) that divergent evolution of these orthopoxviruses started and the West African subtypes of VARV and MPXV were formed as geographical conditions changed to allow isolation of West African animals from other African regions.
Starting Page	895
Ending Page	908
Page Count	14
File Format	PDF
ISSN	10227954
Journal	Russian Journal of Genetics
Volume Number	44
Issue Number	8
e-ISSN	16083369
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2008-08-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Microbial Genetics and Genomics Animal Genetics and Genomics Human Genetics
Content Type	Text
Resource Type	Article
Subject	Genetics

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