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Open data
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Basic information
Entry | Database: PDB / ID: 7ul5 | ||||||
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Title | CryoEM Structure of Inactive SSTR2 bound to Nb6 | ||||||
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![]() | MEMBRANE PROTEIN / Antagonist / Complex | ||||||
Function / homology | ![]() dynorphin receptor activity / response to acrylamide / regulation of saliva secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / somatostatin receptor activity / adenylate cyclase-inhibiting opioid receptor signaling pathway / G protein-coupled opioid receptor activity / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor signaling pathway ...dynorphin receptor activity / response to acrylamide / regulation of saliva secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / somatostatin receptor activity / adenylate cyclase-inhibiting opioid receptor signaling pathway / G protein-coupled opioid receptor activity / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor signaling pathway / peristalsis / positive regulation of dopamine secretion / sensory perception / positive regulation of potassium ion transmembrane transport / conditioned place preference / maternal behavior / receptor serine/threonine kinase binding / neuropeptide binding / cellular response to glucocorticoid stimulus / positive regulation of p38MAPK cascade / eating behavior / response to starvation / behavioral response to cocaine / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / estrous cycle / neuropeptide signaling pathway / MECP2 regulates neuronal receptors and channels / axon terminus / forebrain development / sensory perception of pain / T-tubule / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Peptide ligand-binding receptors / cerebellum development / sarcoplasmic reticulum / locomotory behavior / cellular response to estradiol stimulus / PDZ domain binding / cellular response to glucose stimulus / response to nicotine / response to insulin / synaptic vesicle membrane / response to estrogen / presynaptic membrane / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / spermatogenesis / chemical synaptic transmission / cellular response to lipopolysaccharide / postsynaptic membrane / perikaryon / response to ethanol / defense response to virus / neuron projection / immune response / negative regulation of cell population proliferation / dendrite / mitochondrion / nucleoplasm / membrane / plasma membrane / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
![]() | Robertson, M.J. / Skiniotis, G. | ||||||
Funding support | ![]()
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![]() | ![]() 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: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 74.3 KB | Display | ![]() |
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PDB format | ![]() | 54.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 24.9 KB | Display | |
Data in CIF | ![]() | 33 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 26592MC ![]() 7ul2C ![]() 7ul3C ![]() 7ul4C 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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Components
#1: Protein | Mass: 46542.086 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#2: Antibody | Mass: 14730.255 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-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
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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 |
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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: 1800 nm / Nominal defocus min: 800 nm |
Image recording | Electron dose: 68.93 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 263630 / Symmetry type: POINT |