[Calcitonin]: Calcitonin is a peptide hormone that causes a rapid but short-lived drop in the level of calcium and phosphate in blood by promoting the incorporation of those ions in the bones. Calcitonin function is mediated by the calcitonin receptor/CALCR and the CALCR-RAMP2 (AMYR2) receptor complex (PubMed:35324283). . [Katacalcin]: Katacalcin is a potent plasma calcium-lowering peptide. . CGRP1/CALCA is a peptide hormone that induces vasodilation mediated by the CALCRL-RAMP1 receptor complex (PubMed:1318039, PubMed:33602864, PubMed:9620797). Dilates a variety of vessels including the coronary, cerebral and systemic vasculature. Its abundance in the CNS also points toward a neurotransmitter or neuromodulator role (PubMed:3492492). It also elevates platelet cAMP (PubMed:1318039). CGRP1 can also bind and activate CALCR-RAMP1 (AMYR1) receptor complex (PubMed:38603770). {ECO:0000269|PubMed:1318039, ECO:0000269|PubMed:33602864, ECO:0000269|PubMed:3492492, ECO:0000269|PubMed:38603770, ECO:0000269|PubMed:9620797}. This is the function of CALCA (calcitonin related polypeptide alpha, ENSG00000110680).