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Abstract
The second extracellular loop (ECL2) of the G protein-coupled receptor (GPCR) family is important for ligand interaction and drug discovery. ECL2 of the family B cardioprotective calcitonin gene-related peptide (CGRP) receptor is required for cell signaling. Family B GPCR ligands have two regions; the N-terminus mediates receptor activation, and the remainder confers high-affinity binding. Comparing antagonism of CGRP8-37 at a number of point mutations of ECL2 of the CGRP receptor, we show that the ECL2 potentially facilitates interaction with up to the 18 N-terminal residues of CGRP. This has implications for understanding family B GPCR activation and for drug design at the CGRP receptor.
Original language | English |
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Pages (from-to) | 3877-3880 |
Number of pages | 4 |
Journal | Biochemistry |
Volume | 56 |
Issue number | 30 |
Early online date | 10 Jul 2017 |
DOIs | |
Publication status | Published - 1 Aug 2017 |
Keywords
- Amino Acid Substitution
- Animals
- Binding Sites
- Binding, Competitive
- COS Cells
- Calcitonin Gene-Related Peptide
- Calcitonin Receptor-Like Protein
- Cercopithecus aethiops
- Kinetics
- Ligands
- Miotics
- Models, Molecular
- Peptide Fragments
- Point Mutation
- Protein Conformation
- Protein Interaction Domains and Motifs
- Protein Interaction Mapping
- Protein Multimerization
- Receptor Activity-Modifying Protein 1
- Receptors, Calcitonin Gene-Related Peptide
- Recombinant Proteins
- Signal Transduction
- Structural Homology, Protein
- Comparative Study
- Journal Article
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Dive into the research topics of 'Relative Antagonism of Mutants of the CGRP Receptor Extracellular Loop 2 Domain (ECL2) Using a Truncated Competitive Antagonist (CGRP8-37): Evidence for the Dual Involvement of ECL2 in the Two-Domain Binding Model'. Together they form a unique fingerprint.Projects
- 1 Finished
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The second extracellular loop of the CGRP receptor: A docking site for vasoprotective ligands
Conner, A.
1/01/14 → 31/12/16
Project: Research