Genus: Thetapapillomavirus

Genus: Thetapapillomavirus

Distinguishing features

Members of the only species in this genus are associated with cutaneous lesions in birds and does not contain an E6 ORF, but contains an E9 protein of unknown function. No E8^E2 or E1^E4 proteins have been identified.


See discussion under family description

Genome organization and replication

See discussion under family description.


See discussion under family description.


See discussion under family description.

Species demarcation criteria

Putative novel papillomavirus genome with complete genome sequence data available and that is <70% related to papillomaviruses within the genus.

Member species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus abbreviationIsolate abbreviation
Thetapapillomavirus 1Psittacus erithacus papillomavirus 1AF502599NC_003973Complete genomePePV1

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