2RK3

Structure of A104T DJ-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.05 Å
  • R-Value Free: 0.150 
  • R-Value Work: 0.132 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Impact of Three Parkinsonism-Associated Missense Mutations on Human DJ-1.

Lakshminarasimhan, M.Maldonado, M.T.Zhou, W.Fink, A.L.Wilson, M.A.

(2008) Biochemistry 47: 1381-1392

  • DOI: 10.1021/bi701189c
  • Primary Citation of Related Structures:  2RK4, 2RK6, 3B36, 3B38, 3B3A

  • PubMed Abstract: 
  • A number of missense mutations in the oxidative stress response protein DJ-1 are implicated in rare forms of familial Parkinsonism. The best-characterized Parkinsonian DJ-1 missense mutation, L166P, disrupts homodimerization and results in a poorly f ...

    A number of missense mutations in the oxidative stress response protein DJ-1 are implicated in rare forms of familial Parkinsonism. The best-characterized Parkinsonian DJ-1 missense mutation, L166P, disrupts homodimerization and results in a poorly folded protein. The molecular basis by which the other Parkinsonism-associated mutations disrupt the function of DJ-1, however, is incompletely understood. In this study we show that three different Parkinsonism-associated DJ-1 missense mutations (A104T, E163K, and M26I) reduce the thermal stability of DJ-1 in solution by subtly perturbing the structure of DJ-1 without causing major folding defects or loss of dimerization. Atomic resolution X-ray crystallography shows that the A104T substitution introduces water and a discretely disordered residue into the core of the protein, E163K disrupts a key salt bridge with R145, and M26I causes packing defects in the core of the dimer. The deleterious effect of each Parkinsonism-associated mutation on DJ-1 is dissected by analysis of engineered substitutions (M26L, A104V, and E163K/R145E) that partially alleviate each of the defects introduced by the A104T, E163K and M26I mutations. In total, our results suggest that the protective function of DJ-1 can be compromised by diverse perturbations in its structural integrity, particularly near the junctions of secondary structural elements.


    Organizational Affiliation

    Department of Biochemistry and the Redox Biology Center, The University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0664, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein DJ-1
A
197Homo sapiensGene Names: PARK7
EC: 3.1.2.-, 3.5.1.-
Find proteins for Q99497 (Homo sapiens)
Go to Gene View: PARK7
Go to UniProtKB:  Q99497
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.05 Å
  • R-Value Free: 0.150 
  • R-Value Work: 0.132 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.780α = 90.00
b = 74.780β = 90.00
c = 74.990γ = 120.00
Software Package:
Software NamePurpose
SHELXL-97refinement
ADSCdata collection
HKL-2000data scaling
SHELXmodel building
SHELXLrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance