Genus: Anativirus


Genus: Anativirus

Distinguishing features

The genus is distinguished on the basis of genetic characters. The known anativiruses lack a functional 2A protein.

Virion

Morphology

No details are available on the morphology of the virions.

Nucleic acid

Genome: (Tseng and Tsai 2007) 8226 nt (5'UTR: 425 nt; ORF: 7563 nt; 3'UTR: 238 nt). The location of the cre has not been identified.

Genome organization and replication

Genome layout:

VPg+5′-UTRIRES-[L-1A-1B-1C-1D/2A-2B-2C/3A-3B-3C-3D]-3′-UTR-poly(A)

The deduced polyprotein is of 2,521 amino acids. The predicted leader polypeptide of duck picornavirus is the longest known at 451 aa and suspected to be a trypsin-like protease. The L/VP0 cleavage and presence of a potential myristoylation site on VP0 is predicted for duck picornavirus (kQ/GqvqS) The 2A region is largely deleted with a residual 6 aa remaining.

Antigenicity

See discussion under family description.

Biology

Duck picornavirus was isolated from intestinal tracts of duckling with duck virus hepatitis [Insert citation as above (Tseng and Tsai, 2007) PMID 17686542]. The virus, however, could not produce hemorrhagic lesions in the liver and causes a less fatal disease. 

Species demarcation criteria

There is only a single species in the genus.

Member species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus abbreviationIsolate abbreviation
Anativirus Aduck picornavirusTW90AAY563023NC_006553Complete genomeAnaV-A

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Derivation of names

Anativirus: from Anatidae, the family of birds that includes ducks, geese and swans.

Related, unclassified viruses

Virus name

Accession number

Virus abbreviation

phacovirus [Pf-CHK1/PhV]

KT880670

 

quail picornavirus [QPV1/HUN2010]

JN674502

 

Virus names and virus abbreviations are not official ICTV designations.