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- PDB-8jd6: Cryo-EM structure of Gi1-bound metabotropic glutamate receptor mGlu4 -
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Open data
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Basic information
Entry | Database: PDB / ID: 8jd6 | |||||||||
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Title | Cryo-EM structure of Gi1-bound metabotropic glutamate receptor mGlu4 | |||||||||
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![]() | MEMBRANE PROTEIN / Complex structure / Gi-bound metabotropic glutamate receptor mGlu4 | |||||||||
Function / homology | ![]() adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / negative regulation of adenylate cyclase activity / G protein-coupled glutamate receptor signaling pathway / neurotransmitter secretion / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / G protein-coupled dopamine receptor signaling pathway / positive regulation of macroautophagy ...adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / negative regulation of adenylate cyclase activity / G protein-coupled glutamate receptor signaling pathway / neurotransmitter secretion / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / G protein-coupled dopamine receptor signaling pathway / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway / regulation of neuron apoptotic process / regulation of synaptic transmission, glutamatergic / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G protein-coupled receptor binding / G protein-coupled receptor activity / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G-protein activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / GDP binding / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / presynapse / GTPase binding / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / midbody / G alpha (i) signalling events / fibroblast proliferation / cytoplasmic vesicle / G alpha (s) signalling events / G alpha (q) signalling events / chemical synaptic transmission / cell population proliferation / Ras protein signal transduction / positive regulation of MAPK cascade / Extra-nuclear estrogen signaling / cell cycle / G protein-coupled receptor signaling pathway / cell division / lysosomal membrane / GTPase activity / centrosome / synapse / protein-containing complex binding / nucleolus / GTP binding / Golgi apparatus / signal transduction / extracellular exosome / nucleoplasm / membrane / metal ion binding / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
![]() | Wang, X. / Wang, M. / Xu, T. / Feng, Y. / Han, S. / Lin, S. / Zhao, Q. / Wu, B. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insights into dimerization and activation of the mGlu2-mGlu3 and mGlu2-mGlu4 heterodimers. Authors: Xinwei Wang / Mu Wang / Tuo Xu / Ye Feng / Qiang Shao / Shuo Han / Xiaojing Chu / Yechun Xu / Shuling Lin / Qiang Zhao / Beili Wu / ![]() Abstract: Heterodimerization of the metabotropic glutamate receptors (mGlus) has shown importance in the functional modulation of the receptors and offers potential drug targets for treating central nervous ...Heterodimerization of the metabotropic glutamate receptors (mGlus) has shown importance in the functional modulation of the receptors and offers potential drug targets for treating central nervous system diseases. However, due to a lack of molecular details of the mGlu heterodimers, understanding of the mechanisms underlying mGlu heterodimerization and activation is limited. Here we report twelve cryo-electron microscopy (cryo-EM) structures of the mGlu2-mGlu3 and mGlu2-mGlu4 heterodimers in different conformational states, including inactive, intermediate inactive, intermediate active and fully active conformations. These structures provide a full picture of conformational rearrangement of mGlu2-mGlu3 upon activation. The Venus flytrap domains undergo a sequential conformational change, while the transmembrane domains exhibit a substantial rearrangement from an inactive, symmetric dimer with diverse dimerization patterns to an active, asymmetric dimer in a conserved dimerization mode. Combined with functional data, these structures reveal that stability of the inactive conformations of the subunits and the subunit-G protein interaction pattern are determinants of asymmetric signal transduction of the heterodimers. Furthermore, a novel binding site for two mGlu4 positive allosteric modulators was observed in the asymmetric dimer interfaces of the mGlu2-mGlu4 heterodimer and mGlu4 homodimer, and may serve as a drug recognition site. These findings greatly extend our knowledge about signal transduction of the mGlus. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 458.2 KB | Display | ![]() |
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PDB format | ![]() | 350.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 545.1 KB | Display | ![]() |
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Full document | ![]() | 580.4 KB | Display | |
Data in XML | ![]() | 46.9 KB | Display | |
Data in CIF | ![]() | 70.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 36177MC ![]() 8jcuC ![]() 8jcvC ![]() 8jcwC ![]() 8jcxC ![]() 8jcyC ![]() 8jczC ![]() 8jd0C ![]() 8jd1C ![]() 8jd2C ![]() 8jd3C ![]() 8jd4C ![]() 8jd5C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules CBA
#3: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#4: Protein | Mass: 38744.371 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#5: Protein | Mass: 40552.070 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Protein / Antibody , 2 types, 3 molecules SRD
#1: Protein | Mass: 99458.359 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Antibody | | Mass: 27409.588 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 2 types, 3 molecules ![](data/chem/img/BK0.gif)
![](data/chem/img/SEP.gif)
![](data/chem/img/SEP.gif)
#6: Chemical | ChemComp-BK0 / |
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#7: Chemical |
-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Gi1-bound metabotropic glutamate receptor mGlu4 / Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 800 nm |
Image recording | Electron dose: 70 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
CTF correction | Type: NONE | ||||||||||||||||||||||||
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3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 839200 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 41.04 Å2 | ||||||||||||||||||||||||
Refine LS restraints |
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