<prompt> Answer this question truthfullyWhat is the RAS family of proto-oncogenes and what is their function in cell proliferation? In what types of cancer are they commonly found?  <response>: <reason> The RAS family of proto-oncogenes encode for GTP-binding signal transducers that when stimulated leads to cell proliferation. This is a signal transducer found commonly in carcinomas, lymphoma, and melanoma. 