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- PDB-6ni3: B2V2R-Gs protein subcomplex of a GPCR-G protein-beta-arrestin meg... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6ni3 | |||||||||
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Title | B2V2R-Gs protein subcomplex of a GPCR-G protein-beta-arrestin mega-complex | |||||||||
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Function / homology | ![]() : / beta2-adrenergic receptor activity / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / positive regulation of mini excitatory postsynaptic potential / positive regulation of cAMP-dependent protein kinase activity / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
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Method | ![]() ![]() ![]() | |||||||||
![]() | Nguyen, A.H. / Thomsen, A.R.B. / Cahill, T.J. / des Georges, A. / Lefkowitz, R.J. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of an endosomal signaling GPCR-G protein-β-arrestin megacomplex. Authors: Anthony H Nguyen / Alex R B Thomsen / Thomas J Cahill / Rick Huang / Li-Yin Huang / Tara Marcink / Oliver B Clarke / Søren Heissel / Ali Masoudi / Danya Ben-Hail / Fadi Samaan / Venkata P ...Authors: Anthony H Nguyen / Alex R B Thomsen / Thomas J Cahill / Rick Huang / Li-Yin Huang / Tara Marcink / Oliver B Clarke / Søren Heissel / Ali Masoudi / Danya Ben-Hail / Fadi Samaan / Venkata P Dandey / Yong Zi Tan / Chuan Hong / Jacob P Mahoney / Sarah Triest / John Little / Xin Chen / Roger Sunahara / Jan Steyaert / Henrik Molina / Zhiheng Yu / Amedee des Georges / Robert J Lefkowitz / ![]() ![]() ![]() Abstract: Classically, G-protein-coupled receptors (GPCRs) are thought to activate G protein from the plasma membrane and are subsequently desensitized by β-arrestin (β-arr). However, some GPCRs continue to ...Classically, G-protein-coupled receptors (GPCRs) are thought to activate G protein from the plasma membrane and are subsequently desensitized by β-arrestin (β-arr). However, some GPCRs continue to signal through G protein from internalized compartments, mediated by a GPCR-G protein-β-arr 'megaplex'. Nevertheless, the molecular architecture of the megaplex remains unknown. Here, we present its cryo-electron microscopy structure, which shows simultaneous engagement of human G protein and bovine β-arr to the core and phosphorylated tail, respectively, of a single active human chimeric β-adrenergic receptor with the C-terminal tail of the arginine vasopressin type 2 receptor (βVR). All three components adopt their canonical active conformations, suggesting that a single megaplex GPCR is capable of simultaneously activating G protein and β-arr. Our findings provide a structural basis for GPCR-mediated sustained internalized G protein signaling. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 266 KB | Display | ![]() |
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PDB format | ![]() | 200.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 9376MC ![]() 9375C ![]() 9377C ![]() 6ni2C M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG
#1: Protein | Mass: 44326.160 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#2: Protein | Mass: 38534.062 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 / Non-polymers , 3 types, 3 molecules RN![](data/chem/img/P0G.gif)
![](data/chem/img/P0G.gif)
#4: Protein | Mass: 57630.762 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: e, RB59_126, ADRB2, ADRB2R, B2AR / Production host: ![]() ![]() ![]() ![]() |
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#5: Antibody | ![]() Mass: 15140.742 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() ![]() ![]() |
#6: Chemical | ChemComp-P0G / |
-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: ![]() |
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Sample preparation
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Molecular weight | Units: MEGADALTONS / Experimental value: NO | ||||||||||||||||||||||||
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Source (recombinant) |
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Buffer solution | pH: 7.4 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied![]() ![]() | ||||||||||||||||||||||||
Specimen support | Details: unidentified | ||||||||||||||||||||||||
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![]() |
Image recording | Electron dose: 104 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
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Processing
EM software |
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CTF correction![]() | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||
Symmetry | Point symmetry![]() | |||||||||||||||
3D reconstruction![]() | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 299893 / Symmetry type: POINT |