+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-0745 | |||||||||
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Title | Cryo-EM structure of CB1-G protein complex | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information cannabinoid signaling pathway / regulation of penile erection / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / negative regulation of mast cell activation / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / negative regulation of fatty acid beta-oxidation / negative regulation of dopamine secretion / positive regulation of acute inflammatory response to antigenic stimulus / regulation of presynaptic cytosolic calcium ion concentration ...cannabinoid signaling pathway / regulation of penile erection / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / negative regulation of mast cell activation / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / negative regulation of fatty acid beta-oxidation / negative regulation of dopamine secretion / positive regulation of acute inflammatory response to antigenic stimulus / regulation of presynaptic cytosolic calcium ion concentration / regulation of feeding behavior / negative regulation of serotonin secretion / negative regulation of action potential / Class A/1 (Rhodopsin-like receptors) / positive regulation of blood pressure / positive regulation of fever generation / regulation of metabolic process / axonal fasciculation / regulation of synaptic transmission, GABAergic / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / regulation of insulin secretion / Adenylate cyclase inhibitory pathway / GABA-ergic synapse / positive regulation of protein localization to cell cortex / maternal process involved in female pregnancy / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / regulation of synaptic transmission, glutamatergic / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / negative regulation of blood pressure / response to nutrient / response to cocaine / response to nicotine / Regulation of insulin secretion / 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 / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / positive regulation of neuron projection development / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Sensory perception of sweet, bitter, and umami (glutamate) taste / memory / response to peptide hormone / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / 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 / adenylate cyclase-activating dopamine receptor signaling pathway / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / sensory perception of taste / GPER1 signaling / GDP binding / G-protein beta-subunit binding / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / G alpha (12/13) signalling events / signaling receptor complex adaptor activity / actin cytoskeleton / Thrombin signalling through proteinase activated receptors (PARs) / glucose homeostasis / retina development in camera-type eye / GTPase binding / presynaptic membrane / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / cell cortex / midbody / G alpha (i) signalling events / growth cone / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / spermatogenesis / response to ethanol Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
Authors | Hua T / Li XT / Wu LJ / Makriyannis A / Wang YX / Shen L / Liu ZJ | |||||||||
Citation | Journal: Cell / Year: 2020 Title: Activation and Signaling Mechanism Revealed by Cannabinoid Receptor-G Complex Structures. Authors: Tian Hua / Xiaoting Li / Lijie Wu / Christos Iliopoulos-Tsoutsouvas / Yuxia Wang / Meng Wu / Ling Shen / Christina A Brust / Spyros P Nikas / Feng Song / Xiyong Song / Shuguang Yuan / ...Authors: Tian Hua / Xiaoting Li / Lijie Wu / Christos Iliopoulos-Tsoutsouvas / Yuxia Wang / Meng Wu / Ling Shen / Christina A Brust / Spyros P Nikas / Feng Song / Xiyong Song / Shuguang Yuan / Qianqian Sun / Yiran Wu / Shan Jiang / Travis W Grim / Othman Benchama / Edward L Stahl / Nikolai Zvonok / Suwen Zhao / Laura M Bohn / Alexandros Makriyannis / Zhi-Jie Liu / Abstract: Human endocannabinoid systems modulate multiple physiological processes mainly through the activation of cannabinoid receptors CB1 and CB2. Their high sequence similarity, low agonist selectivity, ...Human endocannabinoid systems modulate multiple physiological processes mainly through the activation of cannabinoid receptors CB1 and CB2. Their high sequence similarity, low agonist selectivity, and lack of activation and G protein-coupling knowledge have hindered the development of therapeutic applications. Importantly, missing structural information has significantly held back the development of promising CB2-selective agonist drugs for treating inflammatory and neuropathic pain without the psychoactivity of CB1. Here, we report the cryoelectron microscopy structures of synthetic cannabinoid-bound CB2 and CB1 in complex with G, as well as agonist-bound CB2 crystal structure. Of important scientific and therapeutic benefit, our results reveal a diverse activation and signaling mechanism, the structural basis of CB2-selective agonists design, and the unexpected interaction of cholesterol with CB1, suggestive of its endogenous allosteric modulating role. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_0745.map.gz | 40.1 MB | EMDB map data format | |
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Header (meta data) | emd-0745-v30.xml emd-0745.xml | 20.3 KB 20.3 KB | Display Display | EMDB header |
Images | emd_0745.png | 106.1 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0745 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0745 | HTTPS FTP |
-Related structure data
Related structure data | 6kpgMC 0744C 6kpcC 6kpfC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_0745.map.gz / Format: CCP4 / Size: 42.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : CB1-G protein complex
Entire | Name: CB1-G protein complex |
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Components |
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-Supramolecule #1: CB1-G protein complex
Supramolecule | Name: CB1-G protein complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: Homo sapiens (human) |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Molecular weight | Experimental: 140 kDa/nm |
-Macromolecule #1: 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: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 40.283836 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: GCTLSAEDKA AVERSKMIDR NLREDGEKAA REVKLLLLGA GESGKSTIVK QMKIIHEAGY SEEECKQYKA VVYSNTIQSI IAIIRAMGR LKIDFGDSAR ADDARQLFVL AGAAEEGFMT AELAGVIKRL WKDSGVQACF NRSREYQLND SAAYYLNDLD R IAQPNYIP ...String: GCTLSAEDKA AVERSKMIDR NLREDGEKAA REVKLLLLGA GESGKSTIVK QMKIIHEAGY SEEECKQYKA VVYSNTIQSI IAIIRAMGR LKIDFGDSAR ADDARQLFVL AGAAEEGFMT AELAGVIKRL WKDSGVQACF NRSREYQLND SAAYYLNDLD R IAQPNYIP TQQDVLRTRV KTTGIVETHF TFKDLHFKMF DVGGQRSERK KWIHCFEGVT AIIFCVALSD YDLVLAEDEE MN RMHESMK LFDSICNNKW FTDTSIILFL NKKDLFEEKI KKSPLTICYP EYAGSNTYEE AAAYIQCQFE DLNKRKDTKE IYT HFTCAT DTKNVQFVFD AVTDVIIKNN LKDCGLF |
-Macromolecule #2: 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: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 38.045629 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: IGRARGFSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSAS QDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT GYLSCCRFLD D NQIVTSSG ...String: IGRARGFSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSAS QDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT GYLSCCRFLD D NQIVTSSG DTTCALWDIE TGQQTTTFTG HTGDVMSLSL APDTRLFVSG ACDASAKLWD VREGMCRQTF TGHESDINAI CF FPNGNAF ATGSDDATCR LFDLRADQEL MTYSHDNIIC GITSVSFSKS GRLLLAGYDD FNCNVWDALK ADRAGVLAGH DNR VSCLGV TDDGMAVATG SWDSFLKIWN |
-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: Homo sapiens (human) |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L |
-Macromolecule #4: Cannabinoid receptor 1
Macromolecule | Name: Cannabinoid receptor 1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 52.843691 KDa |
Recombinant expression | Organism: Mammalian expression vector HA-MCS-pcDNA3.1 (others) |
Sequence | String: ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALDA QKATPPKLED KSPDSPEMKD FRHGFDILVG QIDDALKLAN EGKVKEAQA AAEQLKTTRN AYIQKYLLEV LFQGPVPADQ VNITEFYNKS LSSFKENEEN IQCGENFMDI ECFMVLNPSQ Q LAIAVLSL ...String: ADLEDNWETL NDNLKVIEKA DNAAQVKDAL TKMRAAALDA QKATPPKLED KSPDSPEMKD FRHGFDILVG QIDDALKLAN EGKVKEAQA AAEQLKTTRN AYIQKYLLEV LFQGPVPADQ VNITEFYNKS LSSFKENEEN IQCGENFMDI ECFMVLNPSQ Q LAIAVLSL TLGTFTVLEN LLVLCVILHS RSLRCRPSYH FIGSLAVADL LGSVIFVYSF IDFHVFHRKD SRNVFLFKLG GV TASFTAS VGSLFLTAID RYISIHRPLA YKRIVTRPKA VVAFCLMWTI AIVIAVLPLL GWNCEKLQSV CSDIFPHIDK TYL MFWIGV VSVLLLFIVY AYMYILWKAH SHAVRMIQRG TQKSIIIHTS EDGKVQVTRP DQARMDIELA KTLVLILVVL IICW GPLLA IMVYDVFGKM NKLIKTVFAF CSMLCLLNST VNPIIYALRS KDLRHAFRSM FPSCEGTAQP LDNS |
-Macromolecule #5: scFv16
Macromolecule | Name: scFv16 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 27.742861 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
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 LSAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAAHHHHHH HH |
-Macromolecule #6: (6~{a}~{R},9~{R},10~{a}~{R})-9-(hydroxymethyl)-3-(8-isothiocyanat...
Macromolecule | Name: (6~{a}~{R},9~{R},10~{a}~{R})-9-(hydroxymethyl)-3-(8-isothiocyanato-2-methyl-octan-2-yl)-6,6-dimethyl-6~{a},7,8,9,10,10~{a}-hexahydrobenzo[c]chromen-1-ol type: ligand / ID: 6 / Number of copies: 1 / Formula: 8D0 |
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Molecular weight | Theoretical: 445.658 Da |
Chemical component information | ChemComp-8D0: |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 1 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: -2.0 µm / Nominal defocus min: -1.0 µm / Nominal magnification: 130000 |
Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Temperature | Min: 70.0 K / Max: 70.0 K |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 7420 pixel / Digitization - Dimensions - Height: 7676 pixel / Digitization - Frames/image: 1-45 / Number real images: 5577 / Average electron dose: 1.333 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Particle selection | Number selected: 2186340 |
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CTF correction | Software - Name: Gctf (ver. 1.06) |
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.03) |
Final 3D classification | Number classes: 6 / Avg.num./class: 230923 / Software - Name: RELION (ver. 3.03) |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.03) |
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.03) / Number images used: 505644 |