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Open data
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Basic information
Entry | Database: PDB / ID: 8wu1 | ||||||
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Title | Cryo-EM structure of CB1-beta-arrestin1 complex | ||||||
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![]() | MEMBRANE PROTEIN / cannabinoid receptor / arrestin / biased signal / class A GPCR | ||||||
Function / homology | ![]() TGFBR3 regulates TGF-beta signaling / renal water retention / Defective AVP does not bind AVPR2 and causes neurohypophyseal diabetes insipidus (NDI) / MAP2K and MAPK activation / Activation of SMO / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / vasopressin receptor activity / cannabinoid signaling pathway / regulation of penile erection ...TGFBR3 regulates TGF-beta signaling / renal water retention / Defective AVP does not bind AVPR2 and causes neurohypophyseal diabetes insipidus (NDI) / MAP2K and MAPK activation / Activation of SMO / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / vasopressin receptor activity / cannabinoid signaling pathway / regulation of penile erection / Golgi Associated Vesicle Biogenesis / Lysosome Vesicle Biogenesis / negative regulation of dopamine secretion / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / negative regulation of mast cell activation / AP-2 adaptor complex binding / Ub-specific processing proteases / negative regulation of fatty acid beta-oxidation / clathrin coat of coated pit / clathrin heavy chain binding / negative regulation of serotonin secretion / positive regulation of acute inflammatory response to antigenic stimulus / regulation of feeding behavior / Cargo recognition for clathrin-mediated endocytosis / hemostasis / desensitization of G protein-coupled receptor signaling pathway / telencephalon development / regulation of presynaptic cytosolic calcium ion concentration / negative regulation of action potential / Clathrin-mediated endocytosis / clathrin-dependent endocytosis / positive regulation of blood pressure / positive regulation of fever generation / Class A/1 (Rhodopsin-like receptors) / G protein-coupled receptor internalization / acetylcholine receptor binding / inositol hexakisphosphate binding / axonal fasciculation / regulation of metabolic process / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (s) signalling events / clathrin binding / regulation of synaptic transmission, GABAergic / small molecule binding / positive regulation of systemic arterial blood pressure / pseudopodium / phosphatidylinositol-3,4,5-trisphosphate binding / positive regulation of intracellular signal transduction / positive regulation of receptor internalization / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / endocytic vesicle / negative regulation of Notch signaling pathway / maternal process involved in female pregnancy / cellular response to hormone stimulus / regulation of synaptic transmission, glutamatergic / activation of adenylate cyclase activity / negative regulation of blood pressure / positive regulation of vasoconstriction / response to nutrient / response to cytokine / regulation of insulin secretion / GABA-ergic synapse / response to nicotine / response to cocaine / G protein-coupled receptor binding / clathrin-coated endocytic vesicle membrane / G protein-coupled receptor activity / positive regulation of neuron projection development / receptor internalization / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / memory / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Vasopressin regulates renal water homeostasis via Aquaporins / glucose homeostasis / protein transport / Cargo recognition for clathrin-mediated endocytosis / actin cytoskeleton / Clathrin-mediated endocytosis / positive regulation of protein phosphorylation / presynaptic membrane / growth cone / ubiquitin-dependent protein catabolic process / cytoplasmic vesicle / G alpha (i) signalling events / G alpha (s) signalling events / spermatogenesis / molecular adaptor activity / response to lipopolysaccharide / response to ethanol / mitochondrial outer membrane / positive regulation of ERK1 and ERK2 cascade / endosome / G protein-coupled receptor signaling pathway / positive regulation of apoptotic process / membrane raft / negative regulation of cell population proliferation / positive regulation of cell population proliferation / positive regulation of gene expression / perinuclear region of cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||
![]() | Liao, Y. / Zhang, H. / Shen, Q. / Cai, C. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Snapshot of the cannabinoid receptor 1-arrestin complex unravels the biased signaling mechanism. Authors: Yu-Ying Liao / Huibing Zhang / Qingya Shen / Chenxi Cai / Yu Ding / Dan-Dan Shen / Jia Guo / Jiao Qin / Yingjun Dong / Yan Zhang / Xiao-Ming Li / ![]() Abstract: Cannabis activates the cannabinoid receptor 1 (CB1), which elicits analgesic and emotion regulation benefits, along with adverse effects, via G and β-arrestin signaling pathways. However, the lack ...Cannabis activates the cannabinoid receptor 1 (CB1), which elicits analgesic and emotion regulation benefits, along with adverse effects, via G and β-arrestin signaling pathways. However, the lack of understanding of the mechanism of β-arrestin-1 (βarr1) coupling and signaling bias has hindered drug development targeting CB1. Here, we present the high-resolution cryo-electron microscopy structure of CB1-βarr1 complex bound to the synthetic cannabinoid MDMB-Fubinaca (FUB), revealing notable differences in the transducer pocket and ligand-binding site compared with the G protein complex. βarr1 occupies a wider transducer pocket promoting substantial outward movement of the TM6 and distinctive twin toggle switch rearrangements, whereas FUB adopts a different pose, inserting more deeply than the G-coupled state, suggesting the allosteric correlation between the orthosteric binding pocket and the partner protein site. Taken together, our findings unravel the molecular mechanism of signaling bias toward CB1, facilitating the development of CB1 agonists. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 186.5 KB | Display | ![]() |
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PDB format | ![]() | 137.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 37849MC 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
#1: Protein | Mass: 44135.273 Da / Num. of mol.: 1 / Mutation: R169E, I386A, V387A, F388A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#2: Antibody | Mass: 25650.502 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#3: Antibody | Mass: 23435.064 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#4: Protein | Mass: 50310.129 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#5: Chemical | ChemComp-KCA / |
Has ligand of interest | N |
Has protein modification | Y |
-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: Cryo-EM structure of human cannabinoid receptor 1 with effector protein Type: COMPLEX Details: MDMB-Fubinaca, cannabinoid receptor 1, arrestin2, Fab30 Entity ID: #1-#4 / Source: RECOMBINANT | ||||||||||||
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Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.5 | ||||||||||||
Specimen | Conc.: 5 mg/ml / 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: 5000 nm / Nominal defocus min: 1200 nm |
Image recording | Electron dose: 52 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 110196 / Symmetry type: POINT | ||||||||||||||||||||||||
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