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Cited by 295

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Crystal Structure of Glucagon-like Peptide-1 in Complex with the Extracellular Domain of the Glucagon-like Peptide-1 Receptor

Open access
Underwood, Christina Rye, Garibay, Patrick, Knudsen, Lotte Bjerre, Hastrup, Sven, Peters, Günther H., Rudolph, Rainer, Reedtz-Runge, Steffen·2010·Journal of Biological Chemistry

Abstract

GLP-1 (glucagon-like peptide-1) is an incretin released from intestinal L-cells in response to food intake. Activation of the GLP-1 receptor potentiates the synthesis and release of insulin from pancreatic beta-cells in a glucose-dependent manner. The GLP-1 receptor belongs to class B of the G-protein-coupled receptors, a subfamily characterized by a large N-terminal extracellular ligand binding domain. Exendin-4 and GLP-1 are 50% identical, and exendin-4 is a full agonist with similar affinity and potency for the GLP-1 receptor. We recently solved the crystal structure of the GLP-1 receptor extracellular domain in complex with the competitive antagonist exendin-4(9-39). Interestingly, the isolated extracellular domain binds exendin-4 with much higher affinity than the endogenous agonist GLP-1. Here, we have solved the crystal structure of the extracellular domain in complex with GLP-1 to 2.1 Aresolution. The structure shows that important hydrophobic ligand-receptor interactions are conserved in agonist- and antagonist-bound forms of the extracellular domain, but certain residues in the ligand-binding site adopt a GLP-1-specific conformation. GLP-1 is a kinked but continuous alpha-helix from Thr(13) to Val(33) when bound to the extracellular domain. We supplemented the crystal structure with site-directed mutagenesis to link the structural information of the isolated extracellular domain with the binding properties of the full-length receptor. The data support the existence of differences in the binding modes of GLP-1 and exendin-4 on the full-length GLP-1 receptor.

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Metadata

Authors
Underwood, C. R., Garibay, P., Knudsen, L. B., Hastrup, S., Peters, G. H., Rudolph, R., & Reedtz-Runge, S.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2010-01
Volume
285
Issue
1
Pages
723-730
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2078171783
Cited by
295
References
45
FWCI
6.36
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Crystal Structure of Glucagon-like Peptide-1 in Complex with the Extracellular Domain of the Glucagon-like Peptide-1 Receptor. https://app.cochat.ai/papers/10.1074/jbc.m109.033829
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Underwood, C. R., Garibay, P., Knudsen, L. B., Hastrup, S., Peters, G. H., Rudolph, R., & Reedtz-Runge, S. (2010). Crystal Structure of Glucagon-like Peptide-1 in Complex with the Extracellular Domain of the Glucagon-like Peptide-1 Receptor. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m109.033829

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