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Yorodumi- PDB-8vvf: Kappa opioid receptor:Galphai protein in complex with inverse ago... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 8vvf | |||||||||||||||||||||
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| Title | Kappa opioid receptor:Galphai protein in complex with inverse agonist JDTic | |||||||||||||||||||||
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Keywords | MEMBRANE PROTEIN / G protein coupled receptor / Opioid receptor | |||||||||||||||||||||
| Function / homology | Function and homology informationresponse to acrylamide / adenylate cyclase-inhibiting opioid receptor signaling pathway / dynorphin receptor activity / regulation of saliva secretion / negative regulation of luteinizing hormone secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / positive regulation of dopamine secretion ...response to acrylamide / adenylate cyclase-inhibiting opioid receptor signaling pathway / dynorphin receptor activity / regulation of saliva secretion / negative regulation of luteinizing hormone secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / positive regulation of dopamine secretion / sensory perception / maternal behavior / positive regulation of potassium ion transmembrane transport / receptor serine/threonine kinase binding / neuropeptide binding / positive regulation of p38MAPK cascade / eating behavior / conditioned place preference / neuropeptide signaling pathway / estrous cycle / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / MECP2 regulates neuronal receptors and channels / behavioral response to cocaine / Adenylate cyclase inhibitory pathway / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / axon terminus / sensory perception of pain / T-tubule / cellular response to forskolin / regulation of mitotic spindle organization / Peptide ligand-binding receptors / sarcoplasmic reticulum / response to nicotine / Regulation of insulin secretion / locomotory behavior / cellular response to glucose stimulus / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to insulin / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / response to estrogen / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / 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 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / synaptic vesicle membrane / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / 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) / retina development in camera-type eye / G protein activity / cellular response to lipopolysaccharide / presynaptic membrane / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody Similarity search - Function | |||||||||||||||||||||
| Biological species | Homo sapiens (human)![]() | |||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | |||||||||||||||||||||
Authors | Gati, C. / Motiwala, Z. / Tyson, A.S. / Styrpejko, D. / Han, G.W. / Khan, S. / Ramos-Gonzalez, N. / Shenvi, R. / Majumdar, S. | |||||||||||||||||||||
| Funding support | United States, 2items
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Citation | Journal: Nat Chem Biol / Year: 2025Title: Molecular mechanisms of inverse agonism via κ-opioid receptor-G protein complexes. Authors: Aaliyah S Tyson / Saif Khan / Zenia Motiwala / Gye Won Han / Zixin Zhang / Mohsen Ranjbar / Daniel Styrpejko / Nokomis Ramos-Gonzalez / Stone Woo / Kelly Villers / Delainey Landaker / Terry ...Authors: Aaliyah S Tyson / Saif Khan / Zenia Motiwala / Gye Won Han / Zixin Zhang / Mohsen Ranjbar / Daniel Styrpejko / Nokomis Ramos-Gonzalez / Stone Woo / Kelly Villers / Delainey Landaker / Terry Kenakin / Ryan Shenvi / Susruta Majumdar / Cornelius Gati / ![]() Abstract: Opioid receptors, a subfamily of G protein-coupled receptors (GPCRs), are key therapeutic targets. In the canonical GPCR activation model, agonist binding is required for receptor-G protein complex ...Opioid receptors, a subfamily of G protein-coupled receptors (GPCRs), are key therapeutic targets. In the canonical GPCR activation model, agonist binding is required for receptor-G protein complex formation, while antagonists prevent G protein coupling. However, many GPCRs exhibit basal activity, allowing G protein association without an agonist. The pharmacological impact of agonist-free receptor-G protein complexes is poorly understood. Here we present biochemical evidence that certain κ-opioid receptor (KOR) inverse agonists can act via KOR-G protein complexes. To investigate this phenomenon, we determined cryo-EM structures of KOR-G protein complexes with three inverse agonists: JDTic, norBNI and GB18, corresponding to structures of inverse agonist-bound GPCR-G protein complexes. Remarkably, the orthosteric binding pocket resembles the G protein-free 'inactive' receptor conformation, while the receptor remains coupled to the G protein. In summary, our work challenges the canonical model of receptor antagonism and offers crucial insights into GPCR pharmacology. | |||||||||||||||||||||
| History |
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8vvf.cif.gz | 233.8 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8vvf.ent.gz | 179.2 KB | Display | PDB format |
| PDBx/mmJSON format | 8vvf.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8vvf_validation.pdf.gz | 896.6 KB | Display | wwPDB validaton report |
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| Full document | 8vvf_full_validation.pdf.gz | 905.5 KB | Display | |
| Data in XML | 8vvf_validation.xml.gz | 33.9 KB | Display | |
| Data in CIF | 8vvf_validation.cif.gz | 53.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/vv/8vvf ftp://data.pdbj.org/pub/pdb/validation_reports/vv/8vvf | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 43557MC ![]() 8vveC ![]() 8vvgC ![]() 9d61C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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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 CDB
| #2: Protein | Mass: 37416.930 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: ![]() |
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| #3: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: ![]() |
| #4: Protein | Mass: 40415.031 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: ![]() |
-Protein / Antibody / Non-polymers , 3 types, 3 molecules AE

| #1: Protein | Mass: 42681.020 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: OPRK1, OPRK / Production host: ![]() |
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| #5: Antibody | Mass: 26679.721 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
| #6: Chemical | ChemComp-JDC / ( |
-Details
| Has ligand of interest | Y |
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| 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: Kappa opioid receptor in complex with heterotrimeric G protein (Gai/b/g) and inverse agonist JDTic Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES | ||||||||||||||||||||
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| Molecular weight | Value: 130 kDa/nm / Experimental value: YES | ||||||||||||||||||||
| Source (natural) | Organism: Homo sapiens (human) | ||||||||||||||||||||
| Source (recombinant) | Organism: ![]() | ||||||||||||||||||||
| Buffer solution | pH: 7.5 | ||||||||||||||||||||
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| Specimen | Conc.: 18 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
| Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil | ||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 298 K |
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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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Calibrated magnification: 105000 X / Nominal defocus max: -25000 nm / Nominal defocus min: -15000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 |
| EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 330302 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||
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About Yorodumi



Homo sapiens (human)

United States, 2items
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FIELD EMISSION GUN