+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-23996 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | CryoEM Structure of mGlu2 - Gi Complex | |||||||||
![]() | Composite CryoEM Map of mGlu2 - Heterotrimeric Gi Complex | |||||||||
![]() |
| |||||||||
![]() | Metabotropic Glutamate Receptor 2 (mGlu2) (mGluR2) / Family C G protein-coupled receptor (GPCR) / Heterotrimeric G protein / CryoEM structure / MEMBRANE PROTEIN / MEMBRANE PROTEIN-SIGNALING PROTEIN complex | |||||||||
Function / homology | ![]() regulation of response to drug / group II metabotropic glutamate receptor activity / intracellular glutamate homeostasis / behavioral response to nicotine / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / astrocyte projection / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / glutamate secretion ...regulation of response to drug / group II metabotropic glutamate receptor activity / intracellular glutamate homeostasis / behavioral response to nicotine / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / astrocyte projection / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / glutamate secretion / long-term synaptic depression / regulation of glutamate secretion / cellular response to stress / regulation of dopamine secretion / positive regulation of protein localization to cell cortex / regulation of synaptic transmission, glutamatergic / Adenylate cyclase inhibitory pathway / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / calcium channel regulator activity / presynaptic modulation of chemical synaptic transmission / cellular response to forskolin / regulation of mitotic spindle organization / Regulation of insulin secretion / response to cocaine / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G protein-coupled receptor activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / response to peptide hormone / G-protein beta/gamma-subunit complex binding / centriolar satellite / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / presynaptic membrane / G protein activity / GTPase binding / Ca2+ pathway / retina development in camera-type eye / midbody / cell cortex / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / scaffold protein binding / fibroblast proliferation / G alpha (i) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / gene expression / chemical synaptic transmission / G alpha (q) signalling events / postsynaptic membrane / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / ciliary basal body / G protein-coupled receptor signaling pathway Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||
![]() | Seven AB / Barros-Alvarez X | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: G-protein activation by a metabotropic glutamate receptor. Authors: Alpay B Seven / Ximena Barros-Álvarez / Marine de Lapeyrière / Makaía M Papasergi-Scott / Michael J Robertson / Chensong Zhang / Robert M Nwokonko / Yang Gao / Justin G Meyerowitz / Jean- ...Authors: Alpay B Seven / Ximena Barros-Álvarez / Marine de Lapeyrière / Makaía M Papasergi-Scott / Michael J Robertson / Chensong Zhang / Robert M Nwokonko / Yang Gao / Justin G Meyerowitz / Jean-Philippe Rocher / Dominik Schelshorn / Brian K Kobilka / Jesper M Mathiesen / Georgios Skiniotis / ![]() ![]() ![]() Abstract: Family C G-protein-coupled receptors (GPCRs) operate as obligate dimers with extracellular domains that recognize small ligands, leading to G-protein activation on the transmembrane (TM) domains of ...Family C G-protein-coupled receptors (GPCRs) operate as obligate dimers with extracellular domains that recognize small ligands, leading to G-protein activation on the transmembrane (TM) domains of these receptors by an unknown mechanism. Here we show structures of homodimers of the family C metabotropic glutamate receptor 2 (mGlu2) in distinct functional states and in complex with heterotrimeric G. Upon activation of the extracellular domain, the two transmembrane domains undergo extensive rearrangement in relative orientation to establish an asymmetric TM6-TM6 interface that promotes conformational changes in the cytoplasmic domain of one protomer. Nucleotide-bound G can be observed pre-coupled to inactive mGlu2, but its transition to the nucleotide-free form seems to depend on establishing the active-state TM6-TM6 interface. In contrast to family A and B GPCRs, G-protein coupling does not involve the cytoplasmic opening of TM6 but is facilitated through the coordination of intracellular loops 2 and 3, as well as a critical contribution from the C terminus of the receptor. The findings highlight the synergy of global and local conformational transitions to facilitate a new mode of G-protein activation. | |||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 4.6 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 25 KB 25 KB | Display Display | ![]() |
Images | ![]() | 97.4 KB | ||
Filedesc metadata | ![]() | 7.1 KB | ||
Others | ![]() ![]() ![]() ![]() | 2.9 MB 1 MB 2.2 MB 2.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 344 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 343.5 KB | Display | |
Data in XML | ![]() | 7.4 KB | Display | |
Data in CIF | ![]() | 8.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7mtsMC ![]() 7mtqC ![]() 7mtrC M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data | |
EM raw data | ![]() Data #1: Unaligned multi-frame micrographs of mGlu2 - Gi Complex [micrographs - multiframe]) |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Composite CryoEM Map of mGlu2 - Heterotrimeric Gi Complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.8677 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Additional map: Local and focused refinement of mGlu2 VFT and CRD domains
File | emd_23996_additional_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Local and focused refinement of mGlu2 VFT and CRD domains | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: Local and focused refinement of G-beta-gamma
File | emd_23996_additional_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Local and focused refinement of G-beta-gamma | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: Local and focused refinement of mGlu2 CRD and 7TM domains
File | emd_23996_additional_3.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Local and focused refinement of mGlu2 CRD and 7TM domains | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: Local and focused refinement of mGlu2 7TM domain and G-alpha-i
File | emd_23996_additional_4.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Local and focused refinement of mGlu2 7TM domain and G-alpha-i | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-
Sample components
-Entire : mGlu2 - Heterotrimeric Gi complex
Entire | Name: mGlu2 - Heterotrimeric Gi complex |
---|---|
Components |
|
-Supramolecule #1: mGlu2 - Heterotrimeric Gi complex
Supramolecule | Name: mGlu2 - Heterotrimeric Gi complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 Details: Heterotrimeric G protein coupled metabotropic glutamate receptor 2 bound to Ago-PAM ADX55164 and L-Glutamate |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 277 KDa |
-Macromolecule #1: Metabotropic glutamate receptor 2
Macromolecule | Name: Metabotropic glutamate receptor 2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 93.932445 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: AEGPAKKVLT LEGDLVLGGL FPVHQKGGPA EDCGPVNEHR GIQRLEAMLF ALDRINRDPH LLPGVRLGAH ILDSCSKDTH ALEQALDFV RASLSRGADG SRHICPDGSY ATHGDAPTAI TGVIGGSYSD VSIQVANLLR LFQIPQISYA STSAKLSDKS R YDYFARTV ...String: AEGPAKKVLT LEGDLVLGGL FPVHQKGGPA EDCGPVNEHR GIQRLEAMLF ALDRINRDPH LLPGVRLGAH ILDSCSKDTH ALEQALDFV RASLSRGADG SRHICPDGSY ATHGDAPTAI TGVIGGSYSD VSIQVANLLR LFQIPQISYA STSAKLSDKS R YDYFARTV PPDFFQAKAM AEILRFFNWT YVSTVASEGD YGETGIEAFE LEARARNICV ATSEKVGRAM SRAAFEGVVR AL LQKPSAR VAVLFTRSED ARELLAASQR LNASFTWVAS DGWGALESVV AGSEGAAEGA ITIELASYPI SDFASYFQSL DPW NNSRNP WFREFWEQRF RCSFRQRDCA AHSLRAVPFE QESKIMFVVN AVYAMAHALH NMHRALCPNT TRLCDAMRPV NGRR LYKDF VLNVKFDAPF RPADTHNEVR FDRFGDGIGR YNIFTYLRAG SGRYRYQKVG YWAEGLTLDT SLIPWASPSA GPLPA SRCS EPCLQNEVKS VQPGEVCCWL CIPCQPYEYR LDEFTCADCG LGYWPNASLT GCFELPQEYI RWGDAWAVGP VTIACL GAL ATLFVLGVFV RHNATPVVKA SGRELCYILL GGVFLCYCMT FIFIAKPSTA VCTLRRLGLG TAFSVCYSAL LTKTNRI AR IFGGAREGAQ RPRFISPASQ VAICLALISG QLLIVVAWLV VEAPGTGKET APERREVVTL RCNHRDASML GSLAYNVL L IALCTLYAFK TRKCPENFNE AKFIGFTMYT TCIIWLAFLP IFYVTSSDYR VQTTTMCVSV SLSGSVVLGC LFAPKLHII LFQPQKNVVS HRAPTSRFGS AAARASSSLG QGSGSQFVPT VCNGREVVDS TTSSL UniProtKB: Metabotropic glutamate receptor 2 |
-Macromolecule #2: Guanine nucleotide-binding protein G(i) subunit alpha-1
Macromolecule | Name: Guanine nucleotide-binding protein G(i) subunit alpha-1 type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 40.415031 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGGQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCA TDTKNVQFVF DAVTDVIIKN NLKDCGLF UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1 |
-Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 37.342785 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String: GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #5: 2-methoxy-6-propyl-N-(2-{4-[(1H-tetrazol-5-yl)methoxy]phenyl}ethy...
Macromolecule | Name: 2-methoxy-6-propyl-N-(2-{4-[(1H-tetrazol-5-yl)methoxy]phenyl}ethyl)thieno[2,3-d]pyrimidin-4-amine type: ligand / ID: 5 / Number of copies: 1 / Formula: ZQY |
---|---|
Molecular weight | Theoretical: 425.507 Da |
Chemical component information | ![]() ChemComp-ZQY: |
-Macromolecule #6: GLUTAMIC ACID
Macromolecule | Name: GLUTAMIC ACID / type: ligand / ID: 6 / Number of copies: 2 / Formula: GLU |
---|---|
Molecular weight | Theoretical: 147.129 Da |
Chemical component information | ![]() ChemComp-GLU: |
-Macromolecule #7: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 7 / Number of copies: 2 / Formula: NAG |
---|---|
Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.5 |
---|---|
Grid | Model: Quantifoil R1.2/1.3 / Support film - Material: GOLD / Support film - topology: HOLEY |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Detector mode: COUNTING / Average electron dose: 1.3 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
Startup model | Type of model: NONE |
---|---|
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.2) / Details: A composite map of four locally refined maps. / Number images used: 799323 |
Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |