+Open data
-Basic information
Entry | Database: PDB / ID: 7ul4 | ||||||
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Title | CryoEM Structure of Inactive MOR Bound to Alvimopan and Mb6 | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / Antagonist / Complex | ||||||
Function / homology | Function and homology information Opioid Signalling / spine apparatus / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / adenylate cyclase-inhibiting opioid receptor signaling pathway / positive regulation of appetite / G-protein activation / G protein-coupled opioid receptor activity ...Opioid Signalling / spine apparatus / beta-endorphin receptor activity / morphine receptor activity / negative regulation of Wnt protein secretion / Peptide ligand-binding receptors / adenylate cyclase-inhibiting opioid receptor signaling pathway / positive regulation of appetite / G-protein activation / G protein-coupled opioid receptor activity / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor signaling pathway / sperm ejaculation / G alpha (i) signalling events / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / negative regulation of nitric oxide biosynthetic process / negative regulation of cAMP-mediated signaling / negative regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / neuropeptide binding / regulation of NMDA receptor activity / positive regulation of neurogenesis / eating behavior / negative regulation of cytosolic calcium ion concentration / transmission of nerve impulse / social behavior / neuropeptide signaling pathway / G-protein alpha-subunit binding / GABA-ergic synapse / voltage-gated calcium channel activity / positive regulation of gluconeogenesis / sensory perception of pain / dendrite membrane / presynaptic modulation of chemical synaptic transmission / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / dendrite cytoplasm / excitatory postsynaptic potential / locomotory behavior / G protein-coupled receptor activity / adenylate cyclase-activating dopamine receptor signaling pathway / G-protein beta-subunit binding / presynaptic membrane / phospholipase C-activating G protein-coupled receptor signaling pathway / postsynaptic membrane / perikaryon / response to ethanol / positive regulation of ERK1 and ERK2 cascade / endosome / neuron projection / protein domain specific binding / G protein-coupled receptor signaling pathway / axon / focal adhesion / dendrite / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | Mus musculus (house mouse) synthetic construct (others) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | ||||||
Authors | Robertson, M.J. / Skiniotis, G. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2022 Title: Structure determination of inactive-state GPCRs with a universal nanobody. Authors: Michael J Robertson / Makaía M Papasergi-Scott / Feng He / Alpay B Seven / Justin G Meyerowitz / Ouliana Panova / Maria Claudia Peroto / Tao Che / Georgios Skiniotis / Abstract: Cryogenic electron microscopy (cryo-EM) has widened the field of structure-based drug discovery by allowing for routine determination of membrane protein structures previously intractable. Despite ...Cryogenic electron microscopy (cryo-EM) has widened the field of structure-based drug discovery by allowing for routine determination of membrane protein structures previously intractable. Despite representing one of the largest classes of therapeutic targets, most inactive-state G protein-coupled receptors (GPCRs) have remained inaccessible for cryo-EM because their small size and membrane-embedded nature impedes projection alignment for high-resolution map reconstructions. Here we demonstrate that the same single-chain camelid antibody (nanobody) recognizing a grafted intracellular loop can be used to obtain cryo-EM structures of inactive-state GPCRs at resolutions comparable or better than those obtained by X-ray crystallography. Using this approach, we obtained structures of neurotensin 1 receptor bound to antagonist SR48692, μ-opioid receptor bound to alvimopan, apo somatostatin receptor 2 and histamine receptor 2 bound to famotidine. We expect this rapid, straightforward approach to facilitate the broad exploration of GPCR inactive states without the need for extensive engineering and crystallization. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 7ul4.cif.gz | 80 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7ul4.ent.gz | 53.4 KB | Display | PDB format |
PDBx/mmJSON format | 7ul4.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7ul4_validation.pdf.gz | 1.2 MB | Display | wwPDB validaton report |
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Full document | 7ul4_full_validation.pdf.gz | 1.2 MB | Display | |
Data in XML | 7ul4_validation.xml.gz | 24.9 KB | Display | |
Data in CIF | 7ul4_validation.cif.gz | 33 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ul/7ul4 ftp://data.pdbj.org/pub/pdb/validation_reports/ul/7ul4 | HTTPS FTP |
-Related structure data
Related structure data | 26591MC 7ul2C 7ul3C 7ul5C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 47920.734 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Oprm1, Mor, Oprm / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P42866 |
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#2: Antibody | Mass: 55662.078 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli) |
#3: Chemical | ChemComp-NG0 / |
#4: Water | ChemComp-HOH / |
Has ligand of interest | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
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Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-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: OTHER |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 700 nm |
Image recording | Electron dose: 61.38 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 301332 / Symmetry type: POINT |