Subfamily: Secondpapillomavirinae

Genus: Alefpapillomavirus

Distinguishing features

The exemplar isolate of the single species in this genus (the only genus in the Secondpapillomavirinae) was associated with skin lesions of fish, gilt-head (sea) bream (Sparus aurata), and has the smallest papillomavirus genome known. The genome consists of the core viral proteins (E1, E2, L1, and L2). 

Virion

See discussion under family description. 

Genome organization and replication

See discussion under family description. 

Biology

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.