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 1.1 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 Gαsβγ 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 Gαs. 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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
A
380Homo sapiensGene 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 sapiensGene 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 sapiensGene 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/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Calcitonin receptor
R
501Homo sapiensGene 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