4OR2

Human class C G protein-coupled metabotropic glutamate receptor 1 in complex with a negative allosteric modulator


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Structure of a class C GPCR metabotropic glutamate receptor 1 bound to an allosteric modulator

Wu, H.Wang, C.Gregory, K.J.Han, G.W.Cho, H.P.Xia, Y.Niswender, C.M.Katritch, V.Meiler, J.Cherezov, V.Conn, P.J.Stevens, R.C.

(2014) Science 344: 58-64

  • DOI: 10.1126/science.1249489

  • PubMed Abstract: 
  • The excitatory neurotransmitter glutamate induces modulatory actions via the metabotropic glutamate receptors (mGlus), which are class C G protein-coupled receptors (GPCRs). We determined the structure of the human mGlu1 receptor seven-transmembrane ...

    The excitatory neurotransmitter glutamate induces modulatory actions via the metabotropic glutamate receptors (mGlus), which are class C G protein-coupled receptors (GPCRs). We determined the structure of the human mGlu1 receptor seven-transmembrane (7TM) domain bound to a negative allosteric modulator, FITM, at a resolution of 2.8 angstroms. The modulator binding site partially overlaps with the orthosteric binding sites of class A GPCRs but is more restricted than most other GPCRs. We observed a parallel 7TM dimer mediated by cholesterols, which suggests that signaling initiated by glutamate's interaction with the extracellular domain might be mediated via 7TM interactions within the full-length receptor dimer. A combination of crystallography, structure-activity relationships, mutagenesis, and full-length dimer modeling provides insights about the allosteric modulation and activation mechanism of class C GPCRs.


    Organizational Affiliation

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Soluble cytochrome b562, Metabotropic glutamate receptor 1
A, B
389Homo sapiensEscherichia coli
This entity is chimeric
Gene Names: GRM1 (GPRC1A, MGLUR1), cybC
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Class C GPCR Metabotropic Glutamate Receptor 1 (mGlu1) with bound allosteric modulator
Find proteins for Q13255 (Homo sapiens)
Go to Gene View: GRM1
Go to UniProtKB:  Q13255
Find proteins for P0ABE7 (Escherichia coli)
Go to UniProtKB:  P0ABE7
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLC
Query on OLC

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Download CCD File 
A, B
(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
1-Oleoyl-R-glycerol
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
 Ligand Interaction
PO4
Query on PO4

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Download CCD File 
B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
OLA
Query on OLA

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Download CCD File 
A
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N
 Ligand Interaction
FM9
Query on FM9

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Download CCD File 
A, B
4-fluoro-N-methyl-N-{4-[6-(propan-2-ylamino)pyrimidin-4-yl]-1,3-thiazol-2-yl}benzamide
C18 H18 F N5 O S
WIVGIKIKQHUFOD-UHFFFAOYSA-N
 Ligand Interaction
CLR
Query on CLR

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Download CCD File 
A, B
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.227 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 67.361α = 90.00
b = 86.552β = 90.00
c = 168.277γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
AutoSolphasing
HKL-2000data reduction
BUSTERrefinement
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-19
    Type: Initial release
  • Version 1.1: 2014-03-26
    Type: Structure summary
  • Version 1.2: 2015-02-04
    Type: Derived calculations
  • Version 1.3: 2015-04-01
    Type: Database references
  • Version 1.4: 2017-08-16
    Type: Refinement description, Source and taxonomy
  • Version 1.5: 2017-11-22
    Type: Refinement description