Oncogenes
Proteins produced by tumor viruses that cause uncontrolled host cell division
Proto-oncogene: A normal gene that, when under the control of a virus, can cause uncontrolled cell division and can act as an oncogene
Work in two ways:
Product of oncogene can disrupt normal cell function, leading to uncontrolled cell divisions
Controlled by viral regulators near the site of their integration into the host cell’s chromosome