Predicted to enable orexin receptor activity and peptide hormone binding activity. Acts upstream of or within positive regulation of ERK1 and ERK2 cascade. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be integral component of plasma membrane. Is expressed in several structures, including brain; genitourinary system; gut; immune system; and liver and biliary system. Orthologous to human HCRTR1 (hypocretin receptor 1). [provided by Alliance of Genome Resources, Apr 2022]