7L0Q

Structure of NTS-NTSR1-Gi complex in lipid nanodisc, canonical state, with AHD


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Cryo-EM structure of an activated GPCR-G protein complex in lipid nanodiscs.

Zhang, M.Gui, M.Wang, Z.F.Gorgulla, C.Yu, J.J.Wu, H.Sun, Z.J.Klenk, C.Merklinger, L.Morstein, L.Hagn, F.Pluckthun, A.Brown, A.Nasr, M.L.Wagner, G.

(2021) Nat Struct Mol Biol 28: 258-267

  • DOI: 10.1038/s41594-020-00554-6
  • Primary Citation of Related Structures:  
    7L0S, 7L0Q, 7L0R, 7L0P

  • PubMed Abstract: 
  • G-protein-coupled receptors (GPCRs) are the largest superfamily of transmembrane proteins and the targets of over 30% of currently marketed pharmaceuticals. Although several structures have been solved for GPCR-G protein complexes, few are in a lipid membrane environment ...

    G-protein-coupled receptors (GPCRs) are the largest superfamily of transmembrane proteins and the targets of over 30% of currently marketed pharmaceuticals. Although several structures have been solved for GPCR-G protein complexes, few are in a lipid membrane environment. Here, we report cryo-EM structures of complexes of neurotensin, neurotensin receptor 1 and Gα i1 β 1 γ 1 in two conformational states, resolved to resolutions of 4.1 and 4.2 Å. The structures, determined in a lipid bilayer without any stabilizing antibodies or nanobodies, reveal an extended network of protein-protein interactions at the GPCR-G protein interface as compared to structures obtained in detergent micelles. The findings show that the lipid membrane modulates the structure and dynamics of complex formation and provide a molecular explanation for the stronger interaction between GPCRs and G proteins in lipid bilayers. We propose an allosteric mechanism for GDP release, providing new insights into the activation of G proteins for downstream signaling.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA. Gerhard_Wagner@hms.harvard.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Neurotensin receptor type 1A [auth C]336Rattus norvegicusMutation(s): 10 
Gene Names: Ntsr1Ntsr
Membrane Entity: Yes 
UniProt
Find proteins for P20789 (Rattus norvegicus)
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
NeurotensinB [auth D]10Rattus norvegicusMutation(s): 0 
Gene Names: Nts
Membrane Entity: Yes 
UniProt
Find proteins for P20068 (Rattus norvegicus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1C [auth A]354Homo sapiensMutation(s): 0 
Gene Names: GNAI1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P63096 (Homo sapiens)
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PHAROS:  P63096
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1D [auth B]361Homo sapiensMutation(s): 0 
Gene Names: GNB1
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PHAROS:  P62873
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(T) subunit gamma-T1E [auth G]83Homo sapiensMutation(s): 0 
Gene Names: GNGT1
Membrane Entity: Yes 
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PHAROS:  P63211
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-06
    Type: Initial release
  • Version 1.1: 2021-03-10
    Changes: Database references
  • Version 1.2: 2021-03-24
    Changes: Database references
  • Version 1.3: 2021-03-31
    Changes: Database references