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 and heart and no detectable expression in other peripheral tissues. Decreased expression in heart following aortic banding, a procedure that mimics cardiac hypertrophy produced by high blood pressure. No visible phenotype, however mice display increased susceptibility to heart failure under conditions of hemodynamic stress. Belongs to the G-protein coupled receptor 1 family.