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Open data
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Basic information
Entry | Database: PDB / ID: 6n4b | |||||||||
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Title | Cannabinoid Receptor 1-G Protein Complex | |||||||||
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![]() | SIGNALING PROTEIN / Cannabinoid receptor / GPCR / synthetic cannabinoid / Fubinaca / Gi | |||||||||
Function / homology | ![]() 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 / negative regulation of serotonin secretion ...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 / negative regulation of serotonin secretion / regulation of feeding behavior / regulation of presynaptic cytosolic calcium ion concentration / 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 / regulation of insulin secretion / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / GABA-ergic synapse / Adenylate cyclase inhibitory pathway / 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 / negative regulation of blood pressure / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / response to nutrient / response to cocaine / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / response to nicotine / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / 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 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / memory / response to peptide hormone / 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 / positive regulation of neuron projection development / 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 / actin cytoskeleton / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / glucose homeostasis / Ca2+ pathway / presynaptic membrane / 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 / spermatogenesis / G alpha (q) signalling events / response to ethanol Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | |||||||||
![]() | Krishna Kumar, K. / Shalev-Benami, M. / Hu, H. / Weis, W.I. / Kobilka, B.K. / Skiniotis, G. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of a Signaling Cannabinoid Receptor 1-G Protein Complex. Authors: Kaavya Krishna Kumar / Moran Shalev-Benami / Michael J Robertson / Hongli Hu / Samuel D Banister / Scott A Hollingsworth / Naomi R Latorraca / Hideaki E Kato / Daniel Hilger / Shoji Maeda / ...Authors: Kaavya Krishna Kumar / Moran Shalev-Benami / Michael J Robertson / Hongli Hu / Samuel D Banister / Scott A Hollingsworth / Naomi R Latorraca / Hideaki E Kato / Daniel Hilger / Shoji Maeda / William I Weis / David L Farrens / Ron O Dror / Sanjay V Malhotra / Brian K Kobilka / Georgios Skiniotis / ![]() Abstract: Cannabis elicits its mood-enhancing and analgesic effects through the cannabinoid receptor 1 (CB1), a G protein-coupled receptor (GPCR) that signals primarily through the adenylyl cyclase-inhibiting ...Cannabis elicits its mood-enhancing and analgesic effects through the cannabinoid receptor 1 (CB1), a G protein-coupled receptor (GPCR) that signals primarily through the adenylyl cyclase-inhibiting heterotrimeric G protein G. Activation of CB1-G signaling pathways holds potential for treating a number of neurological disorders and is thus crucial to understand the mechanism of G activation by CB1. Here, we present the structure of the CB1-G signaling complex bound to the highly potent agonist MDMB-Fubinaca (FUB), a recently emerged illicit synthetic cannabinoid infused in street drugs that have been associated with numerous overdoses and fatalities. The structure illustrates how FUB stabilizes the receptor in an active state to facilitate nucleotide exchange in G. The results compose the structural framework to explain CB1 activation by different classes of ligands and provide insights into the G protein coupling and selectivity mechanisms adopted by the receptor. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 209.9 KB | Display | ![]() |
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PDB format | ![]() | 163.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 0339MC M: map data used to model this data C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 476.0 Data #1: Cryo electron microscopy movies of CB1-Gi complex [micrographs - multiframe]) |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABC
#1: Protein | Mass: 40415.031 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 37671.102 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Protein / Antibody , 2 types, 2 molecules RS
#4: Protein | Mass: 55678.535 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#5: Antibody | Mass: 27784.896 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Non-polymers , 2 types, 3 molecules ![](data/chem/img/KCA.gif)
![](data/chem/img/CLR.gif)
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#6: Chemical | ChemComp-KCA / |
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#7: Chemical |
-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: Cannabinoid Receptor 1-G Protein Complex / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2 |
Vitrification | Instrument: FEI VITROBOT MARK IV / 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 |
Image recording | Electron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.13_2998: / Classification: refinement | ||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 177787 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Highest resolution: 3 Å | ||||||||||||||||||||||||
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