4BR6

Crystal structure of Chaetomium thermophilum MnSOD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.123 

wwPDB Validation   3D Report Full Report


This is version 1.2 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
  • Primary Citation of Related Structures:  
    4BR6

  • 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. Electronic address: tassos.papageorgiou@btk.fi.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SUPEROXIDE DISMUTASEABCD197Chaetomium thermophilumMutation(s): 0 
EC: 1.15.1.1
Find proteins for F8V325 (Chaetomium thermophilum)
Explore F8V325 
Go to UniProtKB:  F8V325
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download CCD File 
B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MN3
Query on MN3

Download CCD File 
A, B, C, D
MANGANESE (III) ION
Mn
MMIPFLVOWGHZQD-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
A, C, D
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.123 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.14α = 90
b = 69.14β = 90
c = 300.43γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-18
    Type: Initial release
  • Version 1.1: 2014-01-29
    Changes: Database references
  • Version 1.2: 2019-07-17
    Changes: Data collection