Human RAMP1 Antibody

RAMP1 (Receptor Activity Modifying Protein 1) is a 14‑18 kDa member of the RAMP family of proteins. Variability in MW is due to the absence, or presence, of intramolecular disulfide bonds that form in the ER and Golgi. It is expressed on/in neurons, vascular endothelial cells, visceral and vascular smooth muscle cells, mammary epithelium, osteoblasts and cardiomyocytes. RAMP1 interacts with CRLR/CLR to form an 84 kDa noncovalent receptor complex for CGRP and AM, and with CTR to form a 76 kDa receptor complex for amylin. Mature human RAMP1 is a 122 amino acid (aa) nonglycosylated type I transmembrane protein that contains a 91 aa extracellular domain (ECD) (aa 27‑117) plus a ten aa cytoplasmic tail. In the ECD, residues 78‑90 bind AM, while residues 91‑103 bind CGRP. In the absence of CRLR and CTR, RAMP1 will form 30‑32 kDa disulfide‑linked homodimers in the ER/Golgi. Over aa 27‑117, human RAMP1 shares 65% aa identity with mouse RAMP1.