Megrivirus

Megrivirus is a genus of viruses in the order Picornavirales, in the family Picornaviridae. Turkey serve as natural hosts. There are currently five species in this genus including the type species Megrivirus A. Diseases associated with this genus include: hepatitis.[1][2]

Megrivirus
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Pisuviricota
Class:	Pisoniviricetes
Order:	Picornavirales
Family:	Picornaviridae
Genus:	Megrivirus
Type species
Megrivirus A

Taxonomy

Group: ssRNA(+)

Order: Picornavirales

• Family: Picornaviridae

  • Genus: Megrivirus

    • Megrivirus A
    • Megrivirus B
    • Megrivirus C
    • Megrivirus D
    • Megrivirus E

[2]

Structure

Viruses in Megrivirus are non-enveloped, with icosahedral and spherical geometries, and T=pseudo3 symmetry. The diameter is around 30 nm. Genomes are linear and non-segmented, around 9kb in length.[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Megrivirus	Icosahedral	Pseudo T=3	Non-enveloped	Linear	Monopartite

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the virus to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by lysis, and viroporins. Turkey serve as the natural host.[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Megrivirus	Unknown	None	Cell receptor endocytosis	Lysis	Cytoplasm	Cytoplasm	Unknown

References

1. "Viral Zone". ExPASy. Retrieved 13 August 2015.
2. "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 7 May 2020.

External links

• Viralzone: Megrivirus
• ICTV