Near Full-Length Genome Characterization of a Newly Identified HIV Type 1 Subtype F Variant Circulating in St. Petersburg,Russia

Abstract

We report the near full-length genome characterization of an HIV-1 subtype F virus (D88_845) collected in St. Petersburg, Russia, from a 25-year-old Russian woman perinatally infected in 1982. In a Bayesian phylogenetic analysis, the genome sequence branched basally to the subsubtype F1 clade. In partial sequences, D88_845 clustered with 13 other subtype F sequences from Russia, corresponding to gag (n = 2), pol (n = 3), and env (n = 8) segments. At least 11 of these sequences are from samples collected in St. Petersburg from heterosexually infected Russian individuals. In each of these segments, the Russian viruses formed a monophyletic cluster that branched as a sister clade of the F1 subsubtype. One sequence from Belgium branched with D88_845 with a posterior probability of 0.99. This is the first report on the identification and near full-length genome characterization of the subtype F variant circulating in St. Petersburg, which is closely related to, but distinct from, the F1 subsubtype.

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