6QNO

Rhodopsin-Gi protein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.38 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Cryo-EM structure of the rhodopsin-G alpha i-beta gamma complex reveals binding of the rhodopsin C-terminal tail to the G beta subunit.

Tsai, C.J.Marino, J.Adaixo, R.Pamula, F.Muehle, J.Maeda, S.Flock, T.Taylor, N.M.Mohammed, I.Matile, H.Dawson, R.J.Deupi, X.Stahlberg, H.Schertler, G.

(2019) Elife 8

  • DOI: 10.7554/eLife.46041
  • Primary Citation of Related Structures:  
    6QNK, 6QNO

  • PubMed Abstract: 
  • One of the largest membrane protein families in eukaryotes are G protein-coupled receptors (GPCRs). GPCRs modulate cell physiology by activating diverse intracellular transducers, prominently heterotrimeric G proteins. The recent surge in structural data has expanded our understanding of GPCR-mediated signal transduction ...

    One of the largest membrane protein families in eukaryotes are G protein-coupled receptors (GPCRs). GPCRs modulate cell physiology by activating diverse intracellular transducers, prominently heterotrimeric G proteins. The recent surge in structural data has expanded our understanding of GPCR-mediated signal transduction. However, many aspects, including the existence of transient interactions, remain elusive. We present the cryo-EM structure of the light-sensitive GPCR rhodopsin in complex with heterotrimeric Gi. Our density map reveals the receptor C-terminal tail bound to the Gβ subunit of the G protein, providing a structural foundation for the role of the C-terminal tail in GPCR signaling, and of Gβ as scaffold for recruiting Gα subunits and G protein-receptor kinases. By comparing available complexes, we found a small set of common anchoring points that are G protein-subtype specific. Taken together, our structure and analysis provide new structural basis for the molecular events of the GPCR signaling pathway.


    Organizational Affiliation

    Department of Biology, ETH Zurich, Zürich, Switzerland.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1A376Homo sapiensMutation(s): 0 
Gene Names: GNAI1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Rhodopsin-Gαi-βγ complex
Find proteins for P63096 (Homo sapiens)
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Go to UniProtKB:  P63096
NIH Common Fund Data Resources
PHAROS:  P63096
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1B340Bos taurusMutation(s): 0 
Gene Names: GNB1
Find proteins for P62871 (Bos taurus)
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Go to UniProtKB:  P62871
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(T) subunit gamma-T1C [auth G]74Bos taurusMutation(s): 0 
Gene Names: GNGT1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Rhodopsin-Gαi-βγ complex
Find proteins for P02698 (Bos taurus)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Fab antibody fragment light chainD [auth L]239Mus musculusMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Fab antibody fragment heavy chainE [auth H]249Mus musculusMutation(s): 0 
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
RhodopsinF [auth R]348Bos taurusMutation(s): 3 
Gene Names: RHO
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Rhodopsin-Gαi-βγ complex
Find proteins for P02699 (Bos taurus)
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 7
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseG [auth C]2 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RET
Query on RET

Download Ideal Coordinates CCD File 
H [auth R]RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.38 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland310030_153145
Swiss National Science FoundationSwitzerland310030B_173335
Swiss National Science FoundationSwitzerland160805
Swiss Nanoscience InstituteSwitzerlandA13.12 NanoGhip
Swiss National Science FoundationSwitzerlandNCCR TransCure

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-10
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Source and taxonomy, Structure summary