4CYM

Complex of human VARP-ANKRD1 with Rab32-GppCp


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Varp is Recruited on to Endosomes by Direct Interaction with Retromer, Where Together They Function in Export to the Cell Surface.

Hesketh, G.G.Perez-Dorado, I.Jackson, L.P.Wartosch, L.Schefer, I.B.Gray, S.R.Mccoy, A.J.Zeldin, O.B.Garman, E.F.Harbour, M.E.Evans, P.R.Seaman, M.N.Luzio, J.P.Owen, D.J.

(2014) Dev.Cell 29: 591

  • DOI: 10.1016/j.devcel.2014.04.010
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • VARP is a Rab32/38 effector that also binds to the endosomal/lysosomal R-SNARE VAMP7. VARP binding regulates VAMP7 participation in SNARE complex formation and can therefore influence VAMP7-mediated membrane fusion events. Mutant versions of VARP tha ...

    VARP is a Rab32/38 effector that also binds to the endosomal/lysosomal R-SNARE VAMP7. VARP binding regulates VAMP7 participation in SNARE complex formation and can therefore influence VAMP7-mediated membrane fusion events. Mutant versions of VARP that cannot bind Rab32:GTP, designed on the basis of the VARP ankyrin repeat/Rab32:GTP complex structure described here, unexpectedly retain endosomal localization, showing that VARP recruitment is not dependent on Rab32 binding. We show that recruitment of VARP to the endosomal membrane is mediated by its direct interaction with VPS29, a subunit of the retromer complex, which is involved in trafficking from endosomes to the TGN and the cell surface. Transport of GLUT1 from endosomes to the cell surface requires VARP, VPS29, and VAMP7 and depends on the direct interaction between VPS29 and VARP. Finally, we propose that endocytic cycling of VAMP7 depends on its interaction with VARP and, consequently, also on retromer.


    Organizational Affiliation

    Cambridge Institute for Medical Research and Department of Clinical Biochemistry, University of Cambridge, Wellcome Trust/MRC Building, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0XY, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RAS-RELATED PROTEIN RAB-32
A, B, C
230Homo sapiensMutation(s): 1 
Gene Names: RAB32
Find proteins for Q13637 (Homo sapiens)
Go to Gene View: RAB32
Go to UniProtKB:  Q13637
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ANKYRIN REPEAT DOMAIN-CONTAINING PROTEIN 27
D, E, F
203Homo sapiensMutation(s): 0 
Gene Names: ANKRD27
Find proteins for Q96NW4 (Homo sapiens)
Go to Gene View: ANKRD27
Go to UniProtKB:  Q96NW4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GCP
Query on GCP

Download SDF File 
Download CCD File 
A, B, C
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
C11 H18 N5 O13 P3
PHBDHXOBFUBCJD-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.192 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 144.445α = 90.00
b = 144.445β = 90.00
c = 135.680γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
Aimlessdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-04
    Type: Initial release
  • Version 1.1: 2014-06-25
    Type: Database references