1DO5

HUMAN COPPER CHAPERONE FOR SUPEROXIDE DISMUTASE DOMAIN II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the second domain of the human copper chaperone for superoxide dismutase.

Lamb, A.L.Wernimont, A.K.Pufahl, R.A.O'Halloran, T.V.Rosenzweig, A.C.

(2000) Biochemistry 39: 1589-1595


  • PubMed Abstract: 
  • The human copper chaperone for superoxide dismutase (hCCS) delivers the essential copper ion cofactor to copper,zinc superoxide dismutase (SOD1), a key enzyme in antioxidant defense. Mutations in SOD1 are linked to familial amyotrophic lateral sclero ...

    The human copper chaperone for superoxide dismutase (hCCS) delivers the essential copper ion cofactor to copper,zinc superoxide dismutase (SOD1), a key enzyme in antioxidant defense. Mutations in SOD1 are linked to familial amyotrophic lateral sclerosis (FALS), a fatal neurodegenerative disorder. The molecular mechanisms by which SOD1 is recognized and activated by hCCS are not understood. To better understand this biochemical pathway, we have determined the X-ray structure of the largest domain of hCCS (hCCS Domain II) to 2. 75 A resolution. The overall structure is closely related to that of its target enzyme SOD1, consisting of an eight-stranded beta-barrel and a zinc-binding site formed by two extended loops. The first of these loops provides the ligands to a bound zinc ion, and is analogous to the zinc subloop in SOD1. The second structurally resembles the SOD1 electrostatic channel loop, but lacks many of the residues important for catalysis. Like SOD1 and yCCS, hCCS forms a dimer using a highly conserved interface. In contrast to SOD1, however, the hCCS structure does not contain a copper ion bound in the catalytic site. Notably, the structure reveals a single loop proximal to the dimer interface which is unique to the CCS chaperones.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology, and Cell Biology and Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HUMAN COPPER CHAPERONE FOR SUPEROXIDE DISMUTASE DOMAIN II
A, B, C, D
154Homo sapiensMutation(s): 0 
Gene Names: CCS
Find proteins for O14618 (Homo sapiens)
Go to Gene View: CCS
Go to UniProtKB:  O14618
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B, C, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.228 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 117.186α = 90.00
b = 66.716β = 96.63
c = 88.033γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-12-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance