6NI3

B2V2R-Gs protein subcomplex of a GPCR-G protein-beta-arrestin mega-complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of an endosomal signaling GPCR-G protein-beta-arrestin megacomplex.

Nguyen, A.H.Thomsen, A.R.B.Cahill 3rd, T.J.Huang, R.Huang, L.Y.Marcink, T.Clarke, O.B.Heissel, S.Masoudi, A.Ben-Hail, D.Samaan, F.Dandey, V.P.Tan, Y.Z.Hong, C.Mahoney, J.P.Triest, S.Little 4th, J.Chen, X.Sunahara, R.Steyaert, J.Molina, H.Yu, Z.des Georges, A.Lefkowitz, R.J.

(2019) Nat Struct Mol Biol 26: 1123-1131

  • DOI: 10.1038/s41594-019-0330-y
  • Primary Citation of Related Structures:  
    6NI2, 6NI3

  • PubMed 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 signal through G protein from internalized compartments, mediated by a GPCR-G protein-β-arr 'megaplex' ...

    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 2 -adrenergic receptor with the C-terminal tail of the arginine vasopressin type 2 receptor (β 2 V 2 R). 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.


    Organizational Affiliation

    Howard Hughes Medical Institute, Duke University Medical Center, Durham, NC, USA. lefko001@receptor-biol.duke.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(s) subunit alpha isoforms shortA380Homo sapiensMutation(s): 0 
Gene Names: GNASGNAS1GSP
Membrane Entity: Yes 
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PHAROS:  P63092
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UniProt GroupP63092
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1B350Homo sapiensMutation(s): 0 
Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens)
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PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2C [auth G]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Find proteins for P59768 (Homo sapiens)
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PHAROS:  P59768
GTEx:  ENSG00000186469 
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UniProt GroupP59768
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Endolysin,Beta-2 adrenergic receptor chimeraD [auth R]506Enterobacteria phage RB59Homo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: eRB59_126ADRB2ADRB2RB2AR
EC: 3.2.1.17
Membrane Entity: Yes 
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Find proteins for P07550 (Homo sapiens)
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Go to UniProtKB:  P07550
PHAROS:  P07550
GTEx:  ENSG00000169252 
Find proteins for A0A097J809 (Enterobacteria phage RB59)
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Go to UniProtKB:  A0A097J809
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UniProt GroupsP07550A0A097J809
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Nanobody 35E [auth N]138Lama glamaMutation(s): 0 
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
P0G (Subject of Investigation/LOI)
Query on P0G

Download Ideal Coordinates CCD File 
F [auth R]8-[(1R)-2-{[1,1-dimethyl-2-(2-methylphenyl)ethyl]amino}-1-hydroxyethyl]-5-hydroxy-2H-1,4-benzoxazin-3(4H)-one
C21 H26 N2 O4
NWQXBEWHTDRJIP-KRWDZBQOSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
P0G BindingDB:  6NI3 EC50: 0.1 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)United States2R01-HL016037-47

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-20
    Type: Initial release
  • Version 1.1: 2019-12-04
    Changes: Database references
  • Version 1.2: 2019-12-18
    Changes: Database references