Enables coreceptor activity. Involved in several processes, including female pregnancy; response to estradiol; and response to progesterone. Predicted to be located in cytoplasm. Predicted to be part of adrenomedullin receptor complex and amylin receptor complex 2. Predicted to be active in cell surface. Predicted to colocalize with plasma membrane. Biomarker of adult respiratory distress syndrome; congestive heart failure; hypertension; kidney disease; and pulmonary hypertension. Human ortholog(s) of this gene implicated in hypertension. Orthologous to human RAMP2 (receptor activity modifying protein 2). [provided by Alliance of Genome Resources, Apr 2022]