5UZ7

Volta phase plate cryo-electron microscopy structure of a calcitonin receptor-heterotrimeric Gs protein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 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

Phase-plate cryo-EM structure of a class B GPCR-G-protein complex.

Liang, Y.L.Khoshouei, M.Radjainia, M.Zhang, Y.Glukhova, A.Tarrasch, J.Thal, D.M.Furness, S.G.B.Christopoulos, G.Coudrat, T.Danev, R.Baumeister, W.Miller, L.J.Christopoulos, A.Kobilka, B.K.Wootten, D.Skiniotis, G.Sexton, P.M.

(2017) Nature 546: 118-123

  • DOI: 10.1038/nature22327

  • PubMed Abstract: 
  • Class B G-protein-coupled receptors are major targets for the treatment of chronic diseases, such as osteoporosis, diabetes and obesity. Here we report the structure of a full-length class B receptor, the calcitonin receptor, in complex with peptide ...

    Class B G-protein-coupled receptors are major targets for the treatment of chronic diseases, such as osteoporosis, diabetes and obesity. Here we report the structure of a full-length class B receptor, the calcitonin receptor, in complex with peptide ligand and heterotrimeric Gα s βγ protein determined by Volta phase-plate single-particle cryo-electron microscopy. The peptide agonist engages the receptor by binding to an extended hydrophobic pocket facilitated by the large outward movement of the extracellular ends of transmembrane helices 6 and 7. This conformation is accompanied by a 60° kink in helix 6 and a large outward movement of the intracellular end of this helix, opening the bundle to accommodate interactions with the α5-helix of Gα s . Also observed is an extended intracellular helix 8 that contributes to both receptor stability and functional G-protein coupling via an interaction with the Gβ subunit. This structure provides a new framework for understanding G-protein-coupled receptor function.


    Organizational Affiliation

    Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, 3052 Victoria, Australia.,Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany.,Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800 Victoria, Australia.,Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, USA.,Life Sciences Institute and Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109-2216, USA.,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Scottsdale, Arizona 85259, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
A
380Homo sapiensMutation(s): 0 
Gene Names: GNAS (GNAS1, GSP)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Class B GPCR: Calcitonin receptor-heterotrimeric Gs protein complex
Find proteins for P63092 (Homo sapiens)
Go to Gene View: GNAS
Go to UniProtKB:  P63092
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
B
351Homo sapiensMutation(s): 0 
Gene Names: GNB1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Class B GPCR: Calcitonin receptor-heterotrimeric Gs protein complex
Find proteins for P62873 (Homo sapiens)
Go to Gene View: GNB1
Go to UniProtKB:  P62873
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
G
68Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Class B GPCR: Calcitonin receptor-heterotrimeric Gs protein complex
Find proteins for P59768 (Homo sapiens)
Go to Gene View: GNG2
Go to UniProtKB:  P59768
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
NANOBODY 35
N
138N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Calcitonin receptor
R
501Homo sapiensMutation(s): 0 
Gene Names: CALCR
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Class B GPCR: Calcitonin receptor-heterotrimeric Gs protein complex
Find proteins for P30988 (Homo sapiens)
Go to Gene View: CALCR
Go to UniProtKB:  P30988
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2017-05-03
    Type: Initial release
  • Version 1.1: 2017-06-14
    Type: Database references
  • Version 1.2: 2018-07-18
    Type: Data collection, Experimental preparation