Lambdatorquevirus

Lambdatorquevirus is a genus of viruses, in the family Anelloviridae. Sea lions serve as natural hosts. There are five species in this genus.^[1][2]

Lambdatorquevirus
Virus classification
(unranked):	Virus
Realm:	Monodnaviria
Kingdom:	Shotokuvirae
Phylum:	Commensaviricota
Class:	Cardeaviricetes
Order:	Sanitavirales
Family:	Anelloviridae
Genus:	Lambdatorquevirus

Taxonomy

The genus contains the following species:^[2]

• Lambdatorquevirus phoci1
• Lambdatorquevirus phoci2
• Lambdatorquevirus phoci3
• Lambdatorquevirus phoci5
• Lambdatorquevirus phoci6

Structure

Viruses in Lambdatorquevirus are non-enveloped, with icosahedral geometries, and T=1 symmetry. The diameter is around 19-27 nm. Genomes are circular, around 2.1kb in length. The genome has 2 open reading frames.^[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Lambdatorquevirus	Icosahedral	T=1	Non-enveloped	Circular	Monopartite

Life cycle

Viral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription, with some alternative splicing mechanism is the method of transcription. The virus exits the host cell by nuclear pore export. Sea lions serve as the natural host.^[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Lambdatorquevirus	Sea lions	None	Cell receptor endocytosis	Budding	Nucleus	Nucleus	Vertical; horizontal