2HL9

SUMO protease Ulp1 with the catalytic cysteine oxidized to a sulfonic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular basis of the redox regulation of SUMO proteases: a protective mechanism of intermolecular disulfide linkage against irreversible sulfhydryl oxidation

Xu, Z.Lam, L.S.M.Lam, L.H.Chau, S.F.Ng, T.B.Au, S.W.N.

(2008) Faseb J. 22: 127-137

  • DOI: 10.1096/fj.06-7871com
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Sumoylation has emerged as an indispensable post-translational modification that modulates the functions of a broad spectrum of proteins. Recent studies have demonstrated that reactive oxygen species influence the equilibrium of sumoylation-desumoyla ...

    Sumoylation has emerged as an indispensable post-translational modification that modulates the functions of a broad spectrum of proteins. Recent studies have demonstrated that reactive oxygen species influence the equilibrium of sumoylation-desumoylation. We show herein that H2O2 induces formation of an intermolecular disulfide linkage of human SUMO protease SENP1 via the active-site Cys 603 and a unique residue Cys 613. Such reversible modification confers a higher recovery of enzyme activity, which is also observed in yeast Ulp1, but not in human SENP2, suggesting its protective role against irreversible sulfhydryl oxidation. In vivo formation of a disulfide-linked dimer of SENP1 is also detected in cultured cells in response to oxidative stress. The modifications are further elucidated by the crystal structures of Ulp1 with the catalytic cysteine oxidized to sulfenic, sulfinic, and sulfonic acids. Our findings suggest that, in addition to SUMO conjugating enzymes, SUMO proteases may act as redox sensors and effectors modulating the desumoylation pathway and specific cellular responses to oxidative stress.


    Related Citations: 
    • Ulp1-SUMO crystal structure and genetic analysis reveal conserved interactions and a regulatory element essential for cell growth in yeast
      Mossessova, E.,Lima, C.D.
      (2000) Mol.Cell 5: 865


    Organizational Affiliation

    Centre of Protein Science and Crystallography, Department of Biochemistry, Faculty of Science, The Chinese University of Hong Kong, Hong Kong.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like-specific protease 1
A
221Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: ULP1
EC: 3.4.22.68
Find proteins for Q02724 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q02724
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
OCS
Query on OCS
A
L-PEPTIDE LINKINGC3 H7 N O5 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 105.735α = 90.00
b = 39.448β = 112.24
c = 55.764γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
CrystalCleardata scaling
CrystalCleardata reduction
d*TREKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-07-31
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance