Papovaviruses

Papovaviridae includes two genera :      Papillomavirus and Polymavirus. Characteristically these viruses possess circular double stranded DNA genome. They are non-enveloped icosahedral and replicate in the nucleus. The most outstanding characteristics of this group of viruses is their ability to stimulate host cell DNA synthesis and that viral proteins (oncoproteins) interact with cellular tumor suppressor proteins.   ● Human Papillomaviruses. ● Polyomaviruses.