Orphan G-protein coupled receptor. Seems to act through a G(i)/G(o) mediated pathway (By similarity). May be involved in ciliogenesis (By similarity). Abundant levels detected in the brain (PubMed:18539757). High expression in the heart (at protein level) (PubMed:18539757). No detectable expression in other peripheral tissues (PubMed:18539757). Belongs to the G-protein coupled receptor 1 family. Extended N-terminus.