Genus

Genus: Tremovirus

Family: Picornaviridae

Genus: Tremovirus

 

Distinguishing features

The genus is distinguished on the basis of genetic characters. Avian encephalomyelitis virus (AEV) is most similar to hepatitis A virus (HAV, genus Hepatovirus), but differs by possessing i) a type IV IRES (HAV is type III), ii) 2A with an H-box/NC motif, and iii) 2B and 3A polypeptides with little sequence identity to the HAV counterparts. 

Virion

Morphology

No surface morphology is visible by EM. 

Genus

Genus: Teschovirus

Family: Picornaviridae

Genus: Teschovirus

 

Distinguishing features

The genus is distinguished on the basis of genetic characters. 

Virion

Morphology

No surface morphology is visible by EM. 

Physicochemical and physical properties

Virions are stable at acid pH. Buoyant density in CsCl is 1.33 g cm-3. Empty capsids are often observed in virus preparations.