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- EMDB-36177: Cryo-EM structure of Gi1-bound metabotropic glutamate receptor mGlu4 -
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Open data
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Basic information
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Title | Cryo-EM structure of Gi1-bound metabotropic glutamate receptor mGlu4 | |||||||||
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![]() | Complex structure / Gi-bound metabotropic glutamate receptor mGlu4 / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / neurotransmitter secretion / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway ...adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / neurotransmitter secretion / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway / regulation of synaptic transmission, glutamatergic / regulation of neuron apoptotic 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 / 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 / presynapse / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / Ca2+ pathway / retina development in camera-type eye / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / cytoplasmic vesicle / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / chemical synaptic transmission / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of MAPK cascade / ciliary basal body / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / synapse / centrosome / protein-containing complex binding / GTP binding / nucleolus / Golgi apparatus / signal transduction / extracellular exosome / nucleoplasm / metal ion binding / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | 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
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 160.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.2 KB 17.2 KB | Display Display | ![]() |
Images | ![]() | 46.2 KB | ||
Filedesc metadata | ![]() | 6.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8jd6MC ![]() 8jcuC ![]() 8jcvC ![]() 8jcwC ![]() 8jcxC ![]() 8jcyC ![]() 8jczC ![]() 8jd0C ![]() 8jd1C ![]() 8jd2C ![]() 8jd3C ![]() 8jd4C ![]() 8jd5C C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.045 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : Gi1-bound metabotropic glutamate receptor mGlu4
Entire | Name: Gi1-bound metabotropic glutamate receptor mGlu4 |
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Components |
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-Supramolecule #1: Gi1-bound metabotropic glutamate receptor mGlu4
Supramolecule | Name: Gi1-bound metabotropic glutamate receptor mGlu4 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Metabotropic glutamate receptor 4
Macromolecule | Name: Metabotropic glutamate receptor 4 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 99.458359 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: DYKDDDDGAP KPKGHPHMNS IRIDGDITLG GLFPVHGRGS EGKPCGELKK EKGIHRLEAM LFALDRINND PDLLPNITLG ARILDTCSR DTHALEQSLT FVQALIEKDG TEVRCGSGGP PIITKPERVV GVIGASGSSV SIMVANILRL FKIPQISYAS T APDLSDNS ...String: DYKDDDDGAP KPKGHPHMNS IRIDGDITLG GLFPVHGRGS EGKPCGELKK EKGIHRLEAM LFALDRINND PDLLPNITLG ARILDTCSR DTHALEQSLT FVQALIEKDG TEVRCGSGGP PIITKPERVV GVIGASGSSV SIMVANILRL FKIPQISYAS T APDLSDNS RYDFFSRVVP SDTYQAQAMV DIVRALKWNY VSTVASEGSY GESGVEAFIQ KSREDGGVCI AQSVKIPREP KA GEFDKII RRLLETSNAR AVIIFANEDD IRRVLEAARR ANQTGHFFWM GSDSWGSKIA PVLHLEEVAE GAVTILPKRM SVR GFDRYF SSRTLDNNRR NIWFAEFWED NFHCKLSRHA LKKGSHVKKC TNRERIGQDS AYEQEGKVQF VIDAVYAMGH ALHA MHRDL CPGRVGLCPR MDPVDGTQLL KYIRNVNFSG IAGNPVTFNE NGDAPGRYDI YQYQLRNDSA EYKVIGSWTD HLHLR IERM HWPGSGQQLP RSICSLPCQP GERKKTVKGM PCCWHCEPCT GYQYQVDRYT CKTCPYDMRP TENRTGCRPI PIIKLE WGS PWAVLPLFLA VVGIAATLFV VITFVRYNDT PIVKASGREL SYVLLAGIFL CYATTFLMIA EPDLGTCSLR RIFLGLG MS ISYAALLTKT NRIYRIFEQG KRSVSAPRFI SPASQLAITF SLISLQLLGI CVWFVVDPSH SVVDFQDQRT LDPRFARG V LKCDISDLSL ICLLGYSMLL MVTCTVYAIK TRGVPETFNE AKPIGFTMYT TCIVWLAFIP IFFGTSQSAD KLYIQTTTL TVSVSLSASV SLGMLYMPKV YIILFHPEQN VPKRKRSLKA VVTAATMSNK FTQKGNFRPN GEAKSELCEN LEAPALATKQ TYVTYTNHA I UniProtKB: Metabotropic glutamate receptor 4 |
-Macromolecule #2: scFv
Macromolecule | Name: scFv / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 27.409588 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAALEVLFQ |
-Macromolecule #3: 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: 3 / Number of copies: 1 / Enantiomer: LEVO |
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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 #4: 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: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 38.744371 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI ...String: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI VTSSGDTTCA LWDIETGQQT TTFTGHTGDV MSLSLAPDTR LFVSGACDAS AKLWDVREGM CRQTFTGHES DI NAICFFP NGNAFATGSD DATCRLFDLR ADQELMTYSH DNIICGITSV SFSKSGRLLL AGYDDFNCNV WDALKADRAG VLA GHDNRV SCLGVTDDGM AVATGSWDSF LKIWN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #5: Guanine nucleotide-binding protein G(i) subunit alpha-3
Macromolecule | Name: Guanine nucleotide-binding protein G(i) subunit alpha-3 type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 40.55207 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AKEVKLLLLG AGESGKNTIV KQMKIIHEDG YSEDECKQYK VVVYSNTIQS IIAIIRAMG RLKIDFGEAA RADDARQLFV LAGSAEEGVM TPELAGVIKR LWRDGGVQAC FSRSREYQLN DSASYYLNDL D RISQSNYI ...String: MGCTLSAEDK AAVERSKMID RNLREDGEKA AKEVKLLLLG AGESGKNTIV KQMKIIHEDG YSEDECKQYK VVVYSNTIQS IIAIIRAMG RLKIDFGEAA RADDARQLFV LAGSAEEGVM TPELAGVIKR LWRDGGVQAC FSRSREYQLN DSASYYLNDL D RISQSNYI PTQQDVLRTR VKTTGIVETH FTDKDLYFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHASM KLFDSICNNK WFTETSIILF LNKKDLFEEK IKRSPLTICY PEYTGSNTYE EAAAYIQCQF EDLNRRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKECGLY UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-3 |
-Macromolecule #6: N-(3-chlorophenyl)pyridine-2-carboxamide
Macromolecule | Name: N-(3-chlorophenyl)pyridine-2-carboxamide / type: ligand / ID: 6 / Number of copies: 1 / Formula: BK0 |
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Molecular weight | Theoretical: 232.666 Da |
Chemical component information | ![]() ChemComp-BK0: |
-Macromolecule #7: PHOSPHOSERINE
Macromolecule | Name: PHOSPHOSERINE / type: ligand / ID: 7 / Number of copies: 2 / Formula: SEP |
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Molecular weight | Theoretical: 185.072 Da |
Chemical component information | ![]() ChemComp-SEP: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 70.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.5 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: INSILICO MODEL |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 839200 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |