Abstract

The family Belpaoviridae comprises metazoan-infecting reverse-transcribing viruses with long terminal repeats, commonly known as Bel/Pao LTR retrotransposons. These viruses share evolutionary history and genes involved in genome replication and virion formation with reverse-transcribing viruses of the families Metaviridae, Pseudoviridae, Retroviridae and Caulimoviridae. These five families form the order Ortervirales. This is a summary of the ICTV Report on the family Belpaoviridae, which is available at ictv.global/report/belpaoviridae.

Highlights

  • The family Belpaoviridae comprises metazoan-i­nfecting reverse-­transcribing viruses with long terminal repeats, commonly known as Bel/Pao LTR retrotransposons

  • Ascaris lumbricoides Tas virus (Z29712), species Ascaris lumbricoides Tas virus, genus Semotivirus Unknown Linear single-­stranded RNA of 4–10 kb Replication by reverse-­transcription primed by a host-­encoded tRNA Genomic RNA is translated into one or more polyproteins Vertebrates, insects and nematodes Realm Riboviria, kingdom Pararnavirae, phylum Artverviricota, class Revtraviricetes, order Ortervirales; the genus Semotivirus includes >10 species

  • Given that belpaovirids encode a Gag polyprotein with nucleocapsid and capsid protein domains homologous to those of other members of the order Ortervirales [1, 2], their replication probably involves the formation of virus-­like particles (VLPs), as in the case of retrovirids, metavirids and pseudovirids

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Summary

Introduction

The family Belpaoviridae comprises metazoan-i­nfecting reverse-­transcribing viruses with long terminal repeats, commonly known as Bel/Pao LTR retrotransposons. Example: Virion Genome Replication Translation Host range Taxonomy

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