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



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
  • Structures With Same Primary Citation

  • 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 a ...

    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, UCSF, San Francisco, United States.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 4 protein homolog
E
519Bos taurusMutation(s): 0 
Gene Names: BBS4
Find proteins for Q1JQ97 (Bos taurus)
Go to UniProtKB:  Q1JQ97
Protein Feature View
  • Reference Sequence

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 5 protein homolog
G
341Bos taurusMutation(s): 0 
Gene Names: BBS5
Find proteins for A6QLF9 (Bos taurus)
Go to UniProtKB:  A6QLF9
Protein Feature View
  • Reference Sequence

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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 7 protein homolog
C
715Bos taurusMutation(s): 0 
Gene Names: BBS7
Find proteins for F1MB52 (Bos taurus)
Go to UniProtKB:  F1MB52
Protein Feature View
  • Reference Sequence

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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Tetratricopeptide repeat domain 8
F
501Bos taurusMutation(s): 0 
Gene Names: TTC8
Find proteins for F1N4X0 (Bos taurus)
Go to UniProtKB:  F1N4X0
Protein Feature View
  • Reference Sequence

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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 9
I
887Bos taurusMutation(s): 0 
Gene Names: BBS9
Find proteins for E1BHJ5 (Bos taurus)
Go to UniProtKB:  E1BHJ5
Protein Feature View
  • Reference Sequence

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 18 protein
H
69Bos taurusMutation(s): 0 
Gene Names: BBIP1
Find proteins for G3N2W1 (Bos taurus)
Go to UniProtKB:  G3N2W1
Protein Feature View
  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Bardet-Biedl syndrome 2 protein homolog
B
721Bos taurusMutation(s): 0 
Gene Names: BBS2
Find proteins for Q32L13 (Bos taurus)
Go to UniProtKB:  Q32L13
Protein Feature View
  • Reference Sequence

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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
ADP-ribosylation factor-like protein 6
A
186Bos taurusMutation(s): 0 
Gene Names: ARL6
Find proteins for Q0IIM2 (Bos taurus)
Go to UniProtKB:  Q0IIM2
Protein Feature View
  • Reference Sequence

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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
BBS1 domain-containing protein
D
592Bos taurusMutation(s): 0 
Gene Names: BBS1
Find proteins for E1BN34 (Bos taurus)
Go to UniProtKB:  E1BN34
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report



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 

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