Predicted to enable signaling receptor complex adaptor activity. Involved in several processes, including G protein-coupled receptor signaling pathway; regulation of egg-laying behavior; and regulation of nematode pharyngeal pumping. Located in neuronal cell body. Expressed in body wall musculature; neurons; pharyngeal muscle cell; and vulval muscle. Human ortholog(s) of this gene implicated in intellectual developmental disorder with cardiac arrhythmia. Is an ortholog of human GNB5 (G protein subunit beta 5).