Abstract

Anelloviridae is a family of circular, single-stranded DNA viruses highly prevalent among humans. We report the genome sequence of two torque teno miniviruses found in human oral mucosa samples. Genome organization, phylogenetic analysis, and pairwise comparisons reveal that they belong to novel species within the Betatorquevirus genus.

Highlights

  • Anelloviridae is a family of circular, single-stranded DNA viruses highly prevalent among humans

  • After assembling qualityfiltered (PrinSeq; minimum quality, Ն25 phred score) sequences with CLC Genomic Workbench-6, we found 17 contigs of Ͼ2 kbp that showed BLASTx similarities to anelloviruses, including two circular genomes with best BLAST similarities to viruses from the Betatorquevirus genus

  • The second one, TTMV_ALA22, was attained with ϫ18 coverage from an oral ulcer sample and spans 2,914 nucleotides with 38.37% GϩC contents. These genome sizes and % GϩC contents are in the range of those reported for available Betatorquevirus [1]

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Summary

Introduction

Anelloviridae is a family of circular, single-stranded DNA viruses highly prevalent among humans. Anelloviridae is a highly divergent family of viruses with circular single-stranded DNA genomes. Three genera of anelloviruses are able to infect humans: torque teno virus (TTV; Alphatorquevirus), torque teno minivirus (TTMV; Betatorquevirus), and torque teno minivirus (TTMDV; Gammatorquevirus), with genome sizes of 3.8 to 3.9 kb, 2.8 to 2.9 kb, and 3.2 kb, respectively [1].

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