Receptor activity modifying protein 1 is a protein that in humans is encoded by the RAMP1gene.[1][2]
The protein encoded by this gene is a member of the RAMP family of single-transmembrane-domain proteins, called receptor (calcitonin) activity modifying proteins (RAMPs). RAMPs are type I transmembrane proteins with an extracellular N terminus and a cytoplasmic C terminus. RAMPs are required to transport calcitonin-receptor-like receptor (CALCRL) to the plasma membrane. CALCRL, a receptor with seven transmembrane domains, can function as either a calcitonin gene-related peptide (CGRP) receptor or an adrenomedullin receptor, depending on which members of the RAMP family are expressed. In combination with the RAMP1 protein, CALCRL functions as the CGRP receptor. The RAMP1 protein is involved in the terminal glycosylation, maturation, and presentation of the CGRP receptor to the cell surface.[1] The RAMP1 protein can also interact with the calcitonin receptor (CT) protein, where heteromerisation of RAMP1 with CT converts CT from a calcitonin receptor to the amylin receptor AMY1[3]
↑McLatchie LM, Fraser NJ, Main MJ, Wise A, Brown J, Thompson N, Solari R, Lee MG, Foord SM (May 1998). "RAMPs regulate the transport and ligand specificity of the calcitonin-receptor-like receptor". Nature. 393 (6683): 333–9. doi:10.1038/30666. PMID9620797.
Héroux M, Hogue M, Lemieux S, Bouvier M (2007). "Functional calcitonin gene-related peptide receptors are formed by the asymmetric assembly of a calcitonin receptor-like receptor homo-oligomer and a monomer of receptor activity-modifying protein-1". J. Biol. Chem. 282 (43): 31610–20. doi:10.1074/jbc.M701790200. PMID17785463.
Kuwasako K, Cao YN, Nagoshi Y, et al. (2004). "Characterization of the human calcitonin gene-related peptide receptor subtypes associated with receptor activity-modifying proteins". Mol. Pharmacol. 65 (1): 207–13. doi:10.1124/mol.65.1.207. PMID14722252.
Nagoshi Y, Kuwasako K, Cao YN, et al. (2004). "Tumor necrosis factor-alpha downregulates adrenomedullin receptors in human coronary artery smooth muscle cells". Peptides. 25 (7): 1115–21. doi:10.1016/j.peptides.2004.04.010. PMID15245870.
Kuwasako K, Kitamura K, Nagoshi Y, Eto T (2003). "Novel calcitonin-(8-32)-sensitive adrenomedullin receptors derived from co-expression of calcitonin receptor with receptor activity-modifying proteins". Biochem. Biophys. Res. Commun. 301 (2): 460–4. doi:10.1016/S0006-291X(02)03072-3. PMID12565884.
Wang YF, Zhang J, Li J, et al. (2004). "[Increased atria expression of receptor activity-modifying proteins in heart failure patients]". Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 21 (4): 351–4. PMID15300632.
Eskesen K, János T, Tibor H, et al. (2007). "Unaltered mRNA expression of calcitonin-like receptor and receptor activity modifying proteins in human arteries in stroke and myocardial infarction". Ideggyogy Sz. 60 (11–12): 459–66. PMID18198792.
Fitzsimmons TJ, Zhao X, Wank SA (2003). "The extracellular domain of receptor activity-modifying protein 1 is sufficient for calcitonin receptor-like receptor function". J. Biol. Chem. 278 (16): 14313–20. doi:10.1074/jbc.M211946200. PMID12574158.
Kuwasako K, Kitamura K, Nagoshi Y, et al. (2003). "Identification of the human receptor activity-modifying protein 1 domains responsible for agonist binding specificity". J. Biol. Chem. 278 (25): 22623–30. doi:10.1074/jbc.M302571200. PMID12684503.
Bomberger JM, Parameswaran N, Hall CS, et al. (2005). "Novel function for receptor activity-modifying proteins (RAMPs) in post-endocytic receptor trafficking". J. Biol. Chem. 280 (10): 9297–307. doi:10.1074/jbc.M413786200. PMID15613468.
Nakazato T, Nakayama T, Naganuma T, et al. (2009). "Haplotype-based case-control study of receptor (calcitonin) activity-modifying protein-1 gene in cerebral infarction". J Hum Hypertens. 24 (5): HASH(0x1512cf0). doi:10.1038/jhh.2009.68. PMID19710695.
Cottrell GS, Padilla B, Pikios S, et al. (2007). "Post-endocytic sorting of calcitonin receptor-like receptor and receptor activity-modifying protein 1". J. Biol. Chem. 282 (16): 12260–71. doi:10.1074/jbc.M606338200. PMID17310067.
Udawela M, Christopoulos G, Morfis M, et al. (2006). "A critical role for the short intracellular C terminus in receptor activity-modifying protein function". Mol. Pharmacol. 70 (5): 1750–60. doi:10.1124/mol.106.024257. PMID16912219.