3EZG

Crystal structure of E18Q DJ-1 with oxidized C106


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.116 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Formation of a stabilized cysteine sulfinic acid is critical for the mitochondrial function of the parkinsonism protein DJ-1.

Blackinton, J.Lakshminarasimhan, M.Thomas, K.J.Ahmad, R.Greggio, E.Raza, A.S.Cookson, M.R.Wilson, M.A.

(2009) J.Biol.Chem. 284: 6476-6485

  • DOI: 10.1074/jbc.M806599200
  • Primary Citation of Related Structures:  3F71

  • PubMed Abstract: 
  • The formation of cysteine-sulfinic acid has recently become appreciated as a modification that links protein function to cellular oxidative status. Human DJ-1, a protein associated with inherited parkinsonism, readily forms cysteine-sulfinic acid at ...

    The formation of cysteine-sulfinic acid has recently become appreciated as a modification that links protein function to cellular oxidative status. Human DJ-1, a protein associated with inherited parkinsonism, readily forms cysteine-sulfinic acid at a conserved cysteine residue (Cys106 in human DJ-1). Mutation of Cys106 causes the protein to lose its normal protective function in cell culture and model organisms. However, it is unknown whether the loss of DJ-1 protective function in these mutants is due to the absence of Cys106 oxidation or the absence of the cysteine residue itself. To address this question, we designed a series of substitutions at a proximal glutamic acid residue (Glu18) in human DJ-1 that alter the oxidative propensity of Cys106 through changes in hydrogen bonding. We show that two mutations, E18N and E18Q, allow Cys106 to be oxidized to Cys106-sulfinic acid under mild conditions. In contrast, the E18D mutation stabilizes a cysteine-sulfenic acid that is readily reduced to the thiol in solution and in vivo. We show that E18N and E18Q can both partially substitute for wild-type DJ-1 using mitochondrial fission and cell viability assays. In contrast, the oxidatively impaired E18D mutant behaves as an inactive C106A mutant and fails to protect cells. We therefore conclude that formation of Cys106-sulfinic acid is a key modification that regulates the protective function of DJ-1.


    Organizational Affiliation

    Cell Biology and Gene Expression Unit, Laboratory of Neurogenetics, NIA, National Institutes of Health, Bethesda, Maryland 20892-3707, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein DJ-1
A
196Homo 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
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
A
L-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.116 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.770α = 90.00
b = 74.770β = 90.00
c = 74.790γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
SHELXphasing
SHELXL-97refinement
SHELXmodel building
HKL-2000data reduction
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2014-11-12
    Type: Other