Transports the calcitonin gene-related peptide type 1 receptor (CALCRL) to the plasma membrane. Acts as a receptor for adrenomedullin (AM) together with CALCRL. Heterodimer of CALCRL and RAMP2. Ubiquitous. Expressed predominantly in embryonic brain, lung and gut and in adult heart, lung, skeletal muscle and brain. Belongs to the RAMP family.