4BR6

Crystal structure of Chaetomium thermophilum MnSOD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.120 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure and Biochemical Characterization of a Manganese Superoxide Dismutase from Chaetomium Thermophilum.

Haikarainen, T.Frioux, C.Zhnag, L.Li, D.Papageorgiou, A.C.

(2014) Biochim.Biophys.Acta 1844: 422

  • DOI: 10.1016/j.bbapap.2013.11.014

  • PubMed Abstract: 
  • A manganese superoxide dismutase from the thermophilic fungus Chaetomium thermophilum (CtMnSOD) was expressed in Pichia pastoris and purified to homogeneity. Its optimal temperature was 60°C with approximately 75% of its activity retained after incub ...

    A manganese superoxide dismutase from the thermophilic fungus Chaetomium thermophilum (CtMnSOD) was expressed in Pichia pastoris and purified to homogeneity. Its optimal temperature was 60°C with approximately 75% of its activity retained after incubation at 70°C for 60min. Recombinant yeast cells carrying C. thermophilum mnsod gene exhibited higher stress resistance to salt and oxidative stress-inducing agents than control yeast cells. In an effort to provide structural insights, CtMnSOD was crystallized and its structure was determined at 2.0Å resolution. The overall architecture of CtMnSOD was found similar to other MnSODs with highest structural similarities obtained against a MnSOD from the thermotolerant fungus Aspergillus fumigatus. In order to explain its thermostability, structural and sequence analysis of CtMnSOD with other MnSODs was carried out. An increased number of charged residues and an increase in the number of intersubunit salt bridges and the Thr:Ser ratio were identified as potential reasons for the thermostability of CtMnSOD.


    Organizational Affiliation

    Turku Centre for Biotechnology, University of Turku, BioCity, Turku 20521, Finland; Åbo Akademi University, BioCity, Turku 20521, Finland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUPEROXIDE DISMUTASE
A, B, C, D
197Chaetomium thermophilumMutation(s): 0 
EC: 1.15.1.1
Find proteins for F8V325 (Chaetomium thermophilum)
Go to UniProtKB:  F8V325
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

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Download CCD File 
A, C, D
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MN3
Query on MN3

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Download CCD File 
A, B, C, D
MANGANESE (III) ION
Mn
MMIPFLVOWGHZQD-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.120 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 69.140α = 90.00
b = 69.140β = 90.00
c = 300.430γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-18
    Type: Initial release
  • Version 1.1: 2014-01-29
    Type: Database references