Interaction of calcitonin-gene-related peptide with its receptors

Conner, Alex C., Hay, Debbie L., Howitt, S.G., Kilk, K., Langel, U., Wheatley, Mark, Smith, David M. and Poyner, David R. (2002). Interaction of calcitonin-gene-related peptide with its receptors. Biochemical Society Transactions, 30 (4), pp. 451-455.


The receptor for calcitonin-gene-related peptide (CGRP) is a heterodimer formed by calcitonin-receptor-like receptor (CRLR), a type II (family B) G-protein-coupled receptor, and receptor-activity-modifying protein 1 (RAMP1), a single-membrane-pass protein. It is likely that the first seven or so amino acids of CGRP (which form a disulphide-bonded loop) interact with the transmembrane domain of CRLR to cause receptor activation. The rest of the CGRP molecule falls into three domains. Residues 28-37 and 8-18 are normally required for high-affinity binding, while residues 19-27 form a hinge region. The 28-37 region is almost certainly in direct contact with the receptor; 8-18 may make additional receptor contacts or may stabilize an appropriate conformation of 28-37. It is likely that these regions of CGRP interact both with CRLR and with the extracellular domain of RAMP1.

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Divisions: Life & Health Sciences > Pharmacy
Life & Health Sciences
Additional Information: Colloquium on Lessons from the Type II Family of G-Protein-Coupled Receptores - Their Ligands, Receptor Structure and Function, Edinburgh (UK), 8-10 April 2002
Uncontrolled Keywords: adrenomedullin,calcitonin-receptor-like receptor (CRLR),CGRP,receptor-activity-modifying protein 1 (RAMPI),structure-activity relationships,Biochemistry
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Published Date: 2002-08-28
Authors: Conner, Alex C.
Hay, Debbie L.
Howitt, S.G.
Kilk, K.
Langel, U.
Wheatley, Mark
Smith, David M.
Poyner, David R. ( 0000-0003-1590-112X)

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