5E94

Antibody-bound Glucagon-like Peptide-1 receptor extracellular domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural insight into antibody-mediated antagonism of the Glucagon-like peptide-1 Receptor.

Hennen, S.Kodra, J.T.Soroka, V.Krogh, B.O.Wu, X.Kaastrup, P.Orskov, C.Ronn, S.G.Schluckebier, G.Barbateskovic, S.Gandhi, P.S.Reedtz-Runge, S.

(2016) Sci Rep 6: 26236-26236

  • DOI: 10.1038/srep26236

  • PubMed Abstract: 
  • The Glucagon-like peptide-1 receptor (GLP-1R) is a member of the class B G protein-coupled receptor (GPCR) family and a well-established target for the treatment of type 2 diabetes. The N-terminal extracellular domain (ECD) of GLP-1R is important for ...

    The Glucagon-like peptide-1 receptor (GLP-1R) is a member of the class B G protein-coupled receptor (GPCR) family and a well-established target for the treatment of type 2 diabetes. The N-terminal extracellular domain (ECD) of GLP-1R is important for GLP-1 binding and the crystal structure of the GLP-1/ECD complex was reported previously. The first structure of a class B GPCR transmembrane (TM) domain was solved recently, but the full length receptor structure is still not well understood. Here we describe the molecular details of antibody-mediated antagonism of the GLP-1R using both in vitro pharmacology and x-ray crystallography. We showed that the antibody Fab fragment (Fab 3F52) blocked the GLP-1 binding site of the ECD directly and thereby acts as a competitive antagonist of native GLP-1. Interestingly, Fab 3F52 also blocked a short peptide agonist believed to engage primarily the transmembrane and extracellular loop region of GLP-1R, whereas functionality of an allosteric small-molecule agonist was not inhibited. This study has implications for the structural understanding of the GLP-1R and related class B GPCRs, which is important for the development of new and improved therapeutics targeting these receptors.


    Organizational Affiliation

    Incretin Biology, Novo Nordisk, Novo Nordisk Park, DK-2760, Måløv, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Antibody Fab fragment light chain
A, C
214N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Antibody Fab fragment heavy chain
B, D
224N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Glucagon-like peptide 1 receptor
G, H
126Homo sapiensMutation(s): 0 
Gene Names: GLP1R
Find proteins for P43220 (Homo sapiens)
Go to Gene View: GLP1R
Go to UniProtKB:  P43220
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.188 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 57.201α = 111.61
b = 65.692β = 97.47
c = 88.351γ = 91.28
Software Package:
Software NamePurpose
HKL-2000data reduction
PHENIXrefinement
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-08-24
    Type: Initial release
  • Version 1.1: 2017-08-09
    Type: Data collection, Database references