The function of RAMP1 (receptor activity modifying protein 1, ENSG00000132329) is as follows. Accessory protein that interacts with and modulates the function of G protein-coupled receptors including calcitonin gene- related peptide type 1 receptor (CALCRL) and calcitonin receptor (CALCR) (PubMed:33602864, PubMed:9620797, PubMed:35324283, PubMed:38603770). Required for the transport of CALCRL to the plasma membrane (PubMed:9620797). Together with CALCRL, form the receptor complex for the calcitonin gene-related peptides CGRP1/CALCA and CGRP2/CALCB (PubMed:33602864, PubMed:9620797). Together with CALCR, form the AMYR1 receptor complex for amylin/IAPP and CGRP1/CALCA (PubMed:35324283, PubMed:38603770). {ECO:0000269|PubMed:33602864, ECO:0000269|PubMed:35324283, ECO:0000269|PubMed:38603770, ECO:0000269|PubMed:9620797}.