3RLE

Crystal Structure of GRASP55 GRASP domain (residues 7-208)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the Membrane-tethering GRASP Domain Reveals a Unique PDZ Ligand Interaction That Mediates Golgi Biogenesis.

Truschel, S.T.Sengupta, D.Foote, A.Heroux, A.Macbeth, M.R.Linstedt, A.D.

(2011) J Biol Chem 286: 20125-20129

  • DOI: 10.1074/jbc.C111.245324
  • Primary Citation of Related Structures:  
    3RLE

  • PubMed Abstract: 
  • Biogenesis of the ribbon-like membrane network of the mammalian Golgi requires membrane tethering by the conserved GRASP domain in GRASP65 and GRASP55, yet the tethering mechanism is not fully understood. Here, we report the crystal structure of the ...

    Biogenesis of the ribbon-like membrane network of the mammalian Golgi requires membrane tethering by the conserved GRASP domain in GRASP65 and GRASP55, yet the tethering mechanism is not fully understood. Here, we report the crystal structure of the GRASP55 GRASP domain, which revealed an unusual arrangement of two tandem PDZ folds that more closely resemble prokaryotic PDZ domains. Biochemical and functional data indicated that the interaction between the ligand-binding pocket of PDZ1 and an internal ligand on PDZ2 mediates the GRASP self-interaction, and structural analyses suggest that this occurs via a unique mode of internal PDZ ligand recognition. Our data uncover the structural basis for ligand specificity and provide insight into the mechanism of GRASP-dependent membrane tethering of analogous Golgi cisternae.


    Organizational Affiliation

    Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Golgi reassembly-stacking protein 2A209Homo sapiensMutation(s): 0 
Gene Names: GORASP2GOLPH6
Find proteins for Q9H8Y8 (Homo sapiens)
Explore Q9H8Y8 
Go to UniProtKB:  Q9H8Y8
NIH Common Fund Data Resources
PHAROS  Q9H8Y8
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.04α = 90
b = 88.04β = 90
c = 61.195γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SHELXSphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance