2EFH

Ara7-GDP/AtVps9a(D185N)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

GDP-bound and nucleotide-free intermediates of the guanine nucleotide exchange in the Rab5/Vps9 system

Uejima, T.Ihara, K.Goh, T.Ito, E.Sunada, M.Ueda, T.Nakano, A.Wakatsuki, S.

(2010) J.Biol.Chem. 285: 36689-36697

  • DOI: 10.1074/jbc.M110.152132
  • Primary Citation of Related Structures:  2EFC, 2EFD, 2EFE

  • PubMed Abstract: 
  • Many GTPases regulate intracellular transport and signaling in eukaryotes. Guanine nucleotide exchange factors (GEFs) activate GTPases by catalyzing the exchange of their GDP for GTP. Here we present crystallographic and biochemical studies of a GEF ...

    Many GTPases regulate intracellular transport and signaling in eukaryotes. Guanine nucleotide exchange factors (GEFs) activate GTPases by catalyzing the exchange of their GDP for GTP. Here we present crystallographic and biochemical studies of a GEF reaction with four crystal structures of Arabidopsis thaliana ARA7, a plant homolog of Rab5 GTPase, in complex with its GEF, VPS9a, in the nucleotide-free and GDP-bound forms, as well as a complex with aminophosphonic acid-guanylate ester and ARA7·VPS9a(D185N) with GDP. Upon complex formation with ARA7, VPS9 wedges into the interswitch region of ARA7, inhibiting the coordination of Mg(2+) and decreasing the stability of GDP binding. The aspartate finger of VPS9a recognizes GDP β-phosphate directly and pulls the P-loop lysine of ARA7 away from GDP β-phosphate toward switch II to further destabilize GDP for its release during the transition from the GDP-bound to nucleotide-free intermediates in the nucleotide exchange reaction.


    Organizational Affiliation

    Structural Biology Research Center, Institute of Material Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan. tamami.uejima@kek.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Similarity to vacuolar protein sorting-associated protein VPS9
A, C
267Arabidopsis thalianaGene Names: VPS9A (VPS9)
Find proteins for Q9LT31 (Arabidopsis thaliana)
Go to UniProtKB:  Q9LT31
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Small GTP-binding protein-like
B, D
181Arabidopsis thalianaGene Names: RABF2B (ARA-7, RAB5B)
Find proteins for Q9SN68 (Arabidopsis thaliana)
Go to UniProtKB:  Q9SN68
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
B, D
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.214 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 58.466α = 81.90
b = 58.606β = 87.42
c = 68.974γ = 72.75
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data scaling
MOLREPphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-12-21
    Type: Database references