Transports the calcitonin gene-related peptide type 1 receptor (CALCRL) to the plasma membrane. Acts as a receptor for calcitonin-gene-related peptide (CGRP) together with CALCRL. Heterodimer of CALCRL and RAMP1. Expressed in many tissues including the uterus, bladder, brain, pancreas and gastro-intestinal tract. Belongs to the RAMP family.