6VOA

Cryo-EM structure of the BBSome-ARL6 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 1.0 of the entry. See complete history


Literature

Near-atomic structures of the BBSome reveal the basis for BBSome activation and binding to GPCR cargoes.

Yang, S.Bahl, K.Chou, H.T.Woodsmith, J.Stelzl, U.Walz, T.Nachury, M.V.

(2020) Elife 9

  • DOI: 10.7554/eLife.55954
  • Primary Citation of Related Structures:  
    6VOA, 6VNW

  • PubMed Abstract: 
  • Dynamic trafficking of G protein-coupled receptors (GPCRs) out of cilia is mediated by the BBSome. In concert with its membrane recruitment factor, the small GTPase ARL6/BBS3, the BBSome ferries GPCRs across the transition zone, a diffusion barrier at the base of cilia ...

    Dynamic trafficking of G protein-coupled receptors (GPCRs) out of cilia is mediated by the BBSome. In concert with its membrane recruitment factor, the small GTPase ARL6/BBS3, the BBSome ferries GPCRs across the transition zone, a diffusion barrier at the base of cilia. Here, we present the near-atomic structures of the BBSome by itself and in complex with ARL6 GTP , and we describe the changes in BBSome conformation induced by ARL6 GTP binding. Modeling the interactions of the BBSome with membranes and the GPCR Smoothened (SMO) reveals that SMO, and likely also other GPCR cargoes, must release their amphipathic helix 8 from the membrane to be recognized by the BBSome.


    Organizational Affiliation

    Department of Ophthalmology, University of California San Francisco, San Francisco, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 18 proteinA [auth H]69Bos taurusMutation(s): 0 
Gene Names: BBIP1
UniProt
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 2 protein homologB721Bos taurusMutation(s): 0 
Gene Names: BBS2
Membrane Entity: Yes 
UniProt
Find proteins for Q32L13 (Bos taurus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 4 protein homologC [auth E]519Bos taurusMutation(s): 0 
Gene Names: BBS4
Membrane Entity: Yes 
UniProt
Find proteins for Q1JQ97 (Bos taurus)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 5 protein homologD [auth G]341Bos taurusMutation(s): 0 
Gene Names: BBS5
Membrane Entity: Yes 
UniProt
Find proteins for A6QLF9 (Bos taurus)
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 7 protein homologE [auth C]715Bos taurusMutation(s): 0 
Gene Names: BBS7
UniProt
Find proteins for F1MB52 (Bos taurus)
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Tetratricopeptide repeat domain 8F501Bos taurusMutation(s): 0 
Gene Names: TTC8
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Bardet-Biedl syndrome 9G [auth I]887Bos taurusMutation(s): 0 
Gene Names: BBS9
UniProt
Find proteins for E1BHJ5 (Bos taurus)
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
ADP-ribosylation factor-like protein 6H [auth A]186Bos taurusMutation(s): 0 
Gene Names: ARL6
Membrane Entity: Yes 
UniProt
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
BBS1 domain-containing proteinI [auth D]592Bos taurusMutation(s): 0 
Gene Names: BBS1
UniProt
Find proteins for E1BN34 (Bos taurus)
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM089933

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-24
    Type: Initial release