Alphatetraviridae is a family of viruses. Moths and butterflies serve as natural hosts. There are two genera in the family. Infection outcome varies from unapparent to lethal. It was created by splitting Tetraviridae.
Taxonomy The following genera are assigned to the family:
Betatetravirus Omegatetravirus
Structure Viruses in Alphatetraviridae are non-enveloped, with icosahedral geometries, and T=4 symmetry. The diameter is around 40 nm. Genomes are linear and non-segmented, bipartite, around 6.5kb in length.
Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentationBetatetravirusIcosahedralT=4Non-envelopedLinearMonopartiteOmegatetravirusIcosahedralT=4Non-envelopedLinearSegmented
Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription is the method of transcription. Translation takes place by leaky scanning, and ribosomal skipping. Moths and butterflies serve as the natural host. Transmission routes are oral.
Genus Host details Tissue tropism Entry details Release details Replication site Assembly site TransmissionBetatetravirusMoths; butterfliesMidgutCell receptor endocytosisBuddingCytoplasmCytoplasmOralOmegatetravirusMoths; butterfliesMidgutCell receptor endocytosisBuddingCytoplasmCytoplasmOral
References
External links Viralzone: Alphatetraviridae ICTV