4RUV

Crystal structure of thioredoxin 2 from Staphylococcus aureus NCTC8325


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.173 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Elucidation of the mechanism of disulfide exchange between staphylococcal thioredoxin2 and thioredoxin reductase2: a structural insight.

Bose, M.Bhattacharyya, S.Biswas, R.Roychowdhury, A.Bhattacharjee, A.Ghosh, A.K.Das, A.K.

(2019) Biochimie 

  • DOI: 10.1016/j.biochi.2019.01.019
  • Primary Citation of Related Structures:  
    4RUV, 6A4J

  • PubMed Abstract: 
  • The redox homeostasis of cytoplasm is maintained by a series of disulfide exchange reactions mediated by proteins belonging to the thioredoxin superfamily. Thioredoxin and thioredoxin reductase, being the major members of the family, play a key role in oxidative stress response of Staphylococcus aureus ...

    The redox homeostasis of cytoplasm is maintained by a series of disulfide exchange reactions mediated by proteins belonging to the thioredoxin superfamily. Thioredoxin and thioredoxin reductase, being the major members of the family, play a key role in oxidative stress response of Staphylococcus aureus. In this report, we have identified and characterised an active thioredoxin system of the mentioned pathogen. Crystal structure of thioredoxin2 (SaTrx2) in its reduced form reveals that it contains the conserved redox active WCXXC motif and a thioredoxin fold. Thioredoxin reductase2 (SaTR2) is a flavoprotein and consists of two Rossmann folds as the binding sites for FAD and NADPH. Crystal structure of the SaTR2 holoenzyme shows that the protein consists of two domains and the catalytic site comprises of an intramolecular disulfide bond formed between two sequentially distal cysteine residues. Biophysical and biochemical studies unveil that SaTrx2 and SaTR2 can physically interact in solution and in the course of sustaining the redox equilibrium, the latter reduces the former. Molecular docking has been performed to illustrate the interface formed between SaTrx2 and SaTR2 during the disulfide exchange reaction.


    Organizational Affiliation

    Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. Electronic address: amitk@bt.iitkgp.ac.in.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thioredoxin A114Staphylococcus aureus subsp. aureus NCTC 8325Mutation(s): 0 
Gene Names: SAOUHSC_00834
Find proteins for Q2G000 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G000 
Go to UniProtKB:  Q2G000
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.173 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.376α = 90
b = 31.376β = 90
c = 94.804γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
StructureStudiodata collection
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-09
    Type: Initial release
  • Version 1.1: 2019-02-13
    Changes: Data collection, Database references