1D5T

GUANINE NUCLEOTIDE DISSOCIATION INHIBITOR, ALPHA-ISOFORM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.04 Å
  • R-Value Free: 0.209 
  • R-Value Observed: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

A new functional domain of guanine nucleotide dissociation inhibitor (alpha-GDI) involved in Rab recycling.

Luan, P.Heine, A.Zeng, K.Moyer, B.Greasely, S.E.Kuhn, P.Balch, W.E.Wilson, I.A.

(2000) Traffic 1: 270-281

  • DOI: 10.1034/j.1600-0854.2000.010309.x
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Guanine nucleotide dissociation inhibitor (GDI) is a 55-kDa protein that functions in vesicular membrane transport to recycle Rab GTPases. We have now determined the crystal structure of bovine alpha-GDI at ultra-high resolution (1.04 A). Refinement ...

    Guanine nucleotide dissociation inhibitor (GDI) is a 55-kDa protein that functions in vesicular membrane transport to recycle Rab GTPases. We have now determined the crystal structure of bovine alpha-GDI at ultra-high resolution (1.04 A). Refinement at this resolution highlighted a region with high mobility of its main-chain residues. This corresponded to a surface loop in the primarily alpha-helical domain II at the base of alpha-GDI containing the previously uncharacterized sequence-conserved region (SCR) 3A. Site-directed mutagenesis showed that this mobile loop plays a crucial role in binding of GDI to membranes and extraction of membrane-bound Rab. This domain, referred to as the mobile effector loop, in combination with Rab-binding residues found in the multi-sheet domain I at the apex of alpha-GDI may provide flexibility for recycling of diverse Rab GTPases. We propose that conserved residues in domains I and II synergize to form the functional face of GDI, and that domain II mediates a critical step in Rab recycling during vesicle fusion.


    Organizational Affiliation

    Department of Molecular Biology, Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GUANINE NUCLEOTIDE DISSOCIATION INHIBITOR
A
433Bos taurusMutation(s): 0 
Gene Names: GDI1RABGDIA
Find proteins for P21856 (Bos taurus)
Go to UniProtKB:  P21856
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.04 Å
  • R-Value Free: 0.209 
  • R-Value Observed: 0.173 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.29α = 90
b = 42.74β = 104.55
c = 61.78γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2018-01-31
    Changes: Experimental preparation