Final answer:
HPV is an example of an oncogenic virus, capable of causing cancer by inactivating tumor suppressor proteins through its oncogenes E6 and E7, with E6 known to degrade the tumor suppressor p53.
Step-by-step explanation:
HPV, containing oncogenes E6 and E7, is an example of an oncogenic virus. This type of virus can cause cancer in host organisms. The Human Papillomavirus (HPV) is a sexually transmitted virus that exhibits this oncogenic potential primarily through the action of its proteins E6 and E7, which lead to the inactivation of tumor suppressor proteins. E6, for example, binds to and promotes the degradation of the p53 tumor suppressor protein, removing its regulatory influence on the cell cycle and contributing to uncontrolled cell division. Oncogenic viruses like HPV play a role in the development of several cancers, with HPV being strongly associated with cervical cancer as well as other types of cancers like oropharyngeal and a_nal cancers.