The pharmacology of adrenomedullin receptors and their relationship to CGRP receptors

Hay, Debbie L., Conner, Alex C., Howitt, Stephen G., Smith, David M. and Poyner, David (2004). The pharmacology of adrenomedullin receptors and their relationship to CGRP receptors. Journal of Molecular Neuroscience, 22 (1-2), pp. 105-113.


Adrenomedullin (AM) has two specific receptors formed by the calcitonin-receptor-like receptor (CL) and receptor activity-modifying protein (RAMP) 2 or 3. These are known as AM1 and AM2 receptors, respectively. In addition, AM has appreciable affinity for the CGRP1 receptor, composed of CL and RAMP1. The AM1 receptor has a high degree of selectivity for AM over CGRP and other peptides, and AM 22-52 is an effective antagonist at this receptor. By contrast, the AM2 receptor shows less specificity for AM, having appreciable affinity for βCGRP. Here, CGRP8-37 is either equipotent or more effective as an antagonist than AM22-52, depending on the species from which the receptor components are derived. Thus, under the appropriate circumstances it seems that βCGRP might be able to activate both CGRP 1 and AM2 receptors and AM could activate both AM 1 and AM2 receptors as well as CGRP1 receptors. Current peptide antagonists are not sufficiently selective to discriminate between these three receptors. The CGRP-selectivity of RAMP1 and RAMP3 may be conferred by a putative disulfide bond from the N-terminus to the middle of the extracellular domain of these molecules. This is not present in RAMP2. Copyright © 2004 Humana Press Inc. All rights of any nature whatsoever reserved.

Publication DOI:
Divisions: Aston Business School > Economics finance & entrepreneurship
Life & Health Sciences
Life & Health Sciences > Pharmacy
Uncontrolled Keywords: adrenomedullin,calcitonin receptor-like receptor,CGRP,CL,RAMP2,RAMP3,Neuroscience(all),Biochemistry,Genetics
Full Text Link: http://www.spri ... 1603p018428807/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2004-02-01
Authors: Hay, Debbie L.
Conner, Alex C.
Howitt, Stephen G.
Smith, David M.
Poyner, David ( 0000-0003-1590-112X)

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