1O3X

Crystal structure of human GGA1 GAT domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular Mechanism of Membrane Recruitment of Gga by Arf in Lysosomal Protein Transport

Shiba, T.Kawasaki, M.Takatsu, H.Nogi, T.Matsugaki, N.Igarashi, N.Suzuki, M.Kato, R.Nakayama, K.Wakatsuki, S.

(2003) Nat.Struct.Mol.Biol. 10: 386-393

  • DOI: 10.1038/nsb920
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • GGAs are critical for trafficking soluble proteins from the trans-Golgi network (TGN) to endosomes/lysosomes through interactions with TGN-sorting receptors, ADP-ribosylation factor (ARF) and clathrin. ARF-GTP bound to TGN membranes recruits its effe ...

    GGAs are critical for trafficking soluble proteins from the trans-Golgi network (TGN) to endosomes/lysosomes through interactions with TGN-sorting receptors, ADP-ribosylation factor (ARF) and clathrin. ARF-GTP bound to TGN membranes recruits its effector GGA by binding to the GAT domain, thus facilitating recognition of GGA for cargo-loaded receptors. Here we report the X-ray crystal structures of the human GGA1-GAT domain and the complex between ARF1-GTP and the N-terminal region of the GAT domain. When unbound, the GAT domain forms an elongated bundle of three a-helices with a hydrophobic core. Structurally, this domain, combined with the preceding VHS domain, resembles CALM, an AP180 homolog involved in endocytosis. In the complex with ARF1-GTP, a helix-loop-helix of the N-terminal part of GGA1-GAT interacts with the switches 1 and 2 of ARF1 predominantly in a hydrophobic manner. These data reveal a molecular mechanism underlying membrane recruitment of adaptor proteins by ARF-GTP.


    Organizational Affiliation

    Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ADP-ribosylation factor binding protein GGA1
A
140Homo sapiensMutation(s): 0 
Gene Names: GGA1
Find proteins for Q9UJY5 (Homo sapiens)
Go to Gene View: GGA1
Go to UniProtKB:  Q9UJY5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.245 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 85.110α = 90.00
b = 85.110β = 90.00
c = 59.001γ = 120.00
Software Package:
Software NamePurpose
RESOLVEmodel building
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement
RESOLVEphasing
SOLVEphasing
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-05-20
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance