5O3Y

SOD1 bound to Ebsulfur


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The cysteine-reactive small molecule ebselen facilitates effective SOD1 maturation.

Capper, M.J.Wright, G.S.A.Barbieri, L.Luchinat, E.Mercatelli, E.McAlary, L.Yerbury, J.J.O'Neill, P.M.Antonyuk, S.V.Banci, L.Hasnain, S.S.

(2018) Nat Commun 9: 1693-1693

  • DOI: 10.1038/s41467-018-04114-x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Superoxide dismutase-1 (SOD1)¬†mutants, including those with unaltered enzymatic activity, are known to cause amyotrophic lateral sclerosis (ALS). Several destabilizing factors contribute to pathogenicity including a reduced ability to complete the no ...

    Superoxide dismutase-1 (SOD1) mutants, including those with unaltered enzymatic activity, are known to cause amyotrophic lateral sclerosis (ALS). Several destabilizing factors contribute to pathogenicity including a reduced ability to complete the normal maturation process which comprises folding, metal cofactor acquisition, intra-subunit disulphide bond formation and dimerization. Immature SOD1 forms toxic oligomers and characteristic large insoluble aggregates within motor system cells. Here we report that the cysteine-reactive molecule ebselen efficiently confers the SOD1 intra-subunit disulphide and directs correct SOD1 folding, depopulating the globally unfolded precursor associated with aggregation and toxicity. Assisted formation of the unusual SOD1 cytosolic disulphide bond could have potential therapeutic applications. In less reducing environments, ebselen forms a selenylsulphide with Cys111 and restores the monomer-dimer equilibrium of A4V SOD1 to wild-type. Ebselen is therefore a potent bifunctional pharmacological chaperone for SOD1 that combines properties of the SOD1 chaperone hCCS and the recently licenced antioxidant drug, edaravone.


    Organizational Affiliation

    Molecular Biophysics Group, Institute of Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, L69 7ZB, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Superoxide dismutase [Cu-Zn]
A, F
153Homo sapiensMutation(s): 0 
Gene Names: SOD1
EC: 1.15.1.1
Find proteins for P00441 (Homo sapiens)
Go to Gene View: SOD1
Go to UniProtKB:  P00441
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
9JK
Query on 9JK

Download SDF File 
Download CCD File 
A, F
~{N}-phenyl-2-sulfanyl-benzamide
C13 H11 N O S
UNNFUOQPVNQPFU-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, F
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, F
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.151 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 38.050α = 90.00
b = 67.960β = 106.73
c = 51.180γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
Aimlessdata scaling
iMOSFLMdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
MNDAUnited KingdomHasnain/Apr15/833-791
Medical Research Council (United Kingdom)United KingdomMRF-060-0002-RG-HASNA

Revision History 

  • Version 1.0: 2018-06-13
    Type: Initial release
  • Version 1.1: 2018-06-27
    Type: Data collection, Database references