The calcitonin-receptor-like receptor can function as either a calcitonin-gene-related peptide or an adrenomedullin receptor. The receptors function is modified by receptor-activity-modifying protein or RAMP. RAMPs are single-transmembrane-domain proteins [1].

1: RAMPs regulate the transport and ligand specificity of the calcitonin-receptor-like receptor. McLatchie LM, Fraser NJ, Main MJ, Wise A, Brown J, Thompson N, Solari R, Lee MG, Foord SM; Nature 1998;393:333-339. PMID:9620797