2XJK

Monomeric Human Cu,Zn Superoxide dismutase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Folding Catalysis by Transient Coordination of Zn2+ to the Cu Ligands of the Als-Associated Enzyme Cu/Zn Superoxide Dismutase 1.

Leinartaite, L.Saraboji, K.Nordlund, A.Logan, D.T.Oliveberg, M.

(2010) J.Am.Chem.Soc. 132: 13495

  • DOI: 10.1021/ja1057136
  • Primary Citation of Related Structures:  2XJL

  • PubMed Abstract: 
  • How coordination of metal ions modulates protein structures is not only important for elucidating biological function but has also emerged as a key determinant in protein turnover and protein-misfolding diseases. In this study, we show that the coord ...

    How coordination of metal ions modulates protein structures is not only important for elucidating biological function but has also emerged as a key determinant in protein turnover and protein-misfolding diseases. In this study, we show that the coordination of Zn(2+) to the ALS-associated enzyme Cu/Zn superoxide dismutase (SOD1) is directly controlled by the protein's folding pathway. Zn(2+) first catalyzes the folding reaction by coordinating transiently to the Cu ligands of SOD1, which are all contained within the folding nucleus. Then, after the global folding transition has commenced, the Zn(2+) ion transfers to the higher affinity Zn site, which structures only very late in the folding process. Here it remains dynamically coordinated with an off rate of ∼10(-5) s(-1). This relatively rapid equilibration of metals in and out of the SOD1 structure provides a simple explanation for how the exceptionally long lifetime, >100 years, of holoSOD1 is still compatible with cellular turnover: if a dissociated Zn(2+) ion is prevented from rebinding to the SOD1 structure then the lifetime of the protein is reduced to a just a few hours.


    Related Citations: 
    • Functional Features Cause Misfolding of the Als-Provoking Enzyme Sod1.
      Nordlund, A.,Leinartaite, L.,Saraboji, K.,Aisenbrey, C.,Grobner, G.,Zetterstrom, P.,Danielsson, J.,Logan, D.T.,Oliveberg, M.
      (2009) Proc.Natl.Acad.Sci.USA 106: 9667


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Arrhenius Laboratories of Natural Sciences, Stockholm University, S-106 91 Stockholm, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUPEROXIDE DISMUTASE [CU-ZN]
A
153Homo sapiensGene 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.166 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 35.160α = 90.00
b = 49.480β = 90.00
c = 80.440γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
PHASERphasing
REFMACrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-01
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-17
    Type: Data collection