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. 2018 May 29;92(12):e00515-18.
doi: 10.1128/JVI.00515-18. Print 2018 Jun 15.

Ortervirales: New Virus Order Unifying Five Families of Reverse-Transcribing Viruses

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Ortervirales: New Virus Order Unifying Five Families of Reverse-Transcribing Viruses

Mart Krupovic et al. J Virol. .
No abstract available

Keywords: Belpaoviridae; Caulimoviridae; Hepadnaviridae; International Committee on Taxonomy of Viruses (ICTV); Metaviridae; Pseudoviridae; Retroviridae; Ty3/Gypsy and Ty1/Copia LTR retrotransposons; retroviruses; virus classification; virus evolution.

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Figures

FIG 1
FIG 1
Maximum-likelihood phylogeny of viral reverse transcriptases. The tree includes sequences of 290 viruses belonging to all ICTV-recognized genera of reverse-transcribing viruses. The phylogeny was inferred using PhyML (27) with the LG+G+F substitution model and is rooted with sequences from nonviral retroelements (bacterial group II introns and eukaryotic LINE retroelements). Genomic organizations of selected representatives of reverse-transcribing viruses are shown next to the corresponding branches. Long terminal repeats are shown as black triangles. Note that members of the virus families display considerable variation in gene/domain content (5), which is not captured in this figure. Abbreviations: 6, 6-kDa protein; ATF, aphid transmission factor; CA/CP, capsid protein; CHR, chromodomain (present only in the integrase of particular clades of metaviruses of plants, fungi, and several vertebrates); gag, group-specific antigen; env, envelope genes; INT, integrase; LTR, long terminal repeat; MA, matrix protein; MP, movement protein; NC, nucleocapsid; nef, tat, rev, vif, vpr, and vpu, genes that express regulatory proteins via spliced mRNAs; P, polymerase; pol, polymerase gene; PR, protease; PreS, presurface protein (envelope); PX/TA, protein X/transcription activator; RH, RNase H; RT, reverse transcriptase; SU, surface glycoprotein; TM, transmembrane glycoprotein; TP, terminal protein domain; TT/SR, translation trans-activator/suppressor of RNA interference; VAP, virion-associated protein.

References

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