6NI2

Stabilized beta-arrestin 1-V2T subcomplex of a GPCR-G protein-beta-arrestin mega-complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 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
  • Structures With Same Primary Citation

  • 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 compartmen ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab30 Heavy ChainH237synthetic constructMutation(s): 0 
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Fab30 Light ChainL215synthetic constructMutation(s): 0 
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Vasopressin V2 receptorV26Homo sapiensMutation(s): 0 
Gene Names: AVPR2ADHRDIRDIR3V2R
Find proteins for P30518 (Homo sapiens)
Explore P30518 
Go to UniProtKB:  P30518
NIH Common Fund Data Resources
PHAROS  P30518
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nanobody 32A124Lama glamaMutation(s): 0 
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-arrestin-1B393Bos taurusMutation(s): 0 
Gene Names: ARRB1
Find proteins for P17870 (Bos taurus)
Explore P17870 
Go to UniProtKB:  P17870
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
VL-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
VL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 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 

  • 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