Biological Assembly 1  

 3D View: Structure | Electron Density

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Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 62797.20 
• Atom Count: 4002 
• Residue Count: 612 
• Unique protein chains: 1

2GBU

C6A/C111A/C57A/C146A apo CuZn Superoxide dismutase

• DOI: 10.2210/pdb2GBU/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): 4 


• Deposited: 2006-03-11 Released: 2007-01-02 
• Deposition Author(s): Hornberg, A., Logan, D.T., Marklund, S.L., Oliveberg, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.257 
• R-Value Work: 0.217 

Literature

The Coupling between Disulphide Status, Metallation and Dimer Interface Strength in Cu/Zn Superoxide Dismutase

Hornberg, A., Logan, D.T., Marklund, S.L., Oliveberg, M.

(2007) J.Mol.Biol. 365: 333-342

• PubMed: 17070542 
• DOI: 10.1016/j.jmb.2006.09.048
• Primary Citation of Related Structures:  
  2GBT, 2GBV


• PubMed Abstract: 
  

The gain of neurotoxic function in amyotrophic lateral sclerosis (ALS) has been linked to misfolding of the homodimeric enzyme Cu/Zn superoxide dismutase (SOD). Here, we present the crystal structure of fully cysteine-depleted human SOD (SOD(CallA)), representing a reduced, marginally stable intermediate on the folding pathway in vivo that has also been implicated as neurotoxic precursor state. A hallmark of this species is that it fails to dimerize and becomes trapped as a monomer in the absence of the active-site metals. The crystallographic data show that removal of the C57-C146 disulphide bond sets free the interface loop IV in the apo protein, whereas the same loop remains unaffected in the holo protein. Thus, the low dimerisation propensity of disulphide-reduced apoSOD seems to be of entropic origin due to increased loop flexibility in the monomeric state: in the disulphide-reduced holo protein this gain in configurational entropy upon splitting of the dimer interface is reduced by the metal coordination.

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Organizational Affiliation: 

Department of Biochemistry, Umeå University, SE-901 87 Umeå, Sweden.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Superoxide dismutase [Cu-Zn]	A, B, C, D	153	Homo sapiens	Mutation(s): 4  Gene Names: SOD1 EC: 1.15.1.1
Find proteins for P00441 (Homo sapiens) Go to Gene View: SOD1 Go to UniProtKB:  P00441

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.257 
• R-Value Work: 0.217 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 156.614	α = 90.00
b = 34.427	β = 112.17
c = 114.461	γ = 90.00

Software Package:

Software Name	Purpose
CCP4	data scaling
REFMAC	refinement
CNS	phasing
MOSFLM	data reduction
SCALA	data scaling
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-11 
• Released Date: 2007-01-02 
• Deposition Author(s): Hornberg, A., Logan, D.T., Marklund, S.L., Oliveberg, M.

Revision History 

• Version 1.0: 2007-01-02
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.3: 2018-05-23
  Type: Data collection