4V0L

Crystal structure of the CrARL6DN in the GTP bound form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.197 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for Membrane Targeting of the Bbsome by Arl6

Mourao, A.Nager, A.R.Nachury, M.V.Lorentzen, E.

(2014) Nat.Struct.Mol.Biol. 21: 1035

  • DOI: 10.1038/nsmb.2920
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The BBSome is a coat-like ciliary trafficking complex composed of proteins mutated in Bardet-Biedl syndrome (BBS). A critical step in BBSome-mediated sorting is recruitment of the BBSome to membranes by the GTP-bound Arf-like GTPase ARL6. We have det ...

    The BBSome is a coat-like ciliary trafficking complex composed of proteins mutated in Bardet-Biedl syndrome (BBS). A critical step in BBSome-mediated sorting is recruitment of the BBSome to membranes by the GTP-bound Arf-like GTPase ARL6. We have determined crystal structures of Chlamydomonas reinhardtii ARL6-GDP, ARL6-GTP and the ARL6-GTP-BBS1 complex. The structures demonstrate how ARL6-GTP binds the BBS1 β-propeller at blades 1 and 7 and explain why GTP- but not GDP-bound ARL6 can recruit the BBSome to membranes. Single point mutations in the ARL6-GTP-BBS1 interface abolish the interaction of ARL6 with the BBSome and prevent the import of BBSomes into cilia. Furthermore, we show that BBS1 with the M390R mutation, responsible for 30% of all reported BBS disease cases, fails to interact with ARL6-GTP, thus providing a molecular rationale for patient pathologies.


    Organizational Affiliation

    Department of Structural Cell Biology, Max-Planck-Institute of Biochemistry, Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ARF-LIKE SMALL GTPASE
A, B
169Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: BBS3B
Find proteins for A8JF99 (Chlamydomonas reinhardtii)
Go to UniProtKB:  A8JF99
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download SDF File 
Download CCD File 
A, B
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.197 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.184 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 118.721α = 90.00
b = 118.721β = 90.00
c = 146.702γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2014-11-26
    Type: Database references
  • Version 1.2: 2014-12-17
    Type: Database references