Acts as a Ras effector and participates in MAPK pathway activation (PubMed:9674433, PubMed:9618511). Probably acts as a regulatory subunit of protein phosphatase that specifically dephosphorylates Raf kinase and stimulates Raf activity at specialized signaling complexes upon Ras activation (PubMed:10521400, PubMed:14685271). Required for vulval development (PubMed:10521400). Involved in fluid homeostasis (PubMed:11689700). Plays a role in nicotinic acetylcholine receptor (nAChR)-mediated sensitivity to nicotine (PubMed:15990870). Interacts with let-60. Belongs to the SHOC2 family.