4AF2

C61S mutant of thiol peroxidase form E. coli.

• PDB DOI: https://doi.org/10.2210/pdb4AF2/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2012-01-16 Released: 2012-05-02 
• Deposition Author(s): Beckham, K.S.H., Roe, A.J., Byron, O., Gabrielsen, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.283 
• R-Value Work: 0.229 
• R-Value Observed: 0.232 

Literature

The Structure of an Orthorhombic Crystal Form of a `Forced Reduced' Thiol Peroxidase Reveals Lattice Formation Aided by the Presence of the Affinity Tag

Beckham, K.S.H., Byron, O., Roe, A.J., Gabrielsen, M.

(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 522

• PubMed: 22691780 
• DOI: https://doi.org/10.1107/S1744309112011487
• Primary Citation of Related Structures:  
  4AF2


• PubMed Abstract: 
  

  Thiol peroxidase (Tpx) is an atypical 2-Cys peroxiredoxin, which has been suggested to be important for cell survival and virulence in Gram-negative pathogens. The structure of a catalytically inactive version of this protein in an orthorhombic crystal form has been determined by molecular replacement. Structural alignments revealed that Tpx is conserved. Analysis of the crystal packing shows that the linker region of the affinity tag is important for formation of the crystal lattice.

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Organizational Affiliation: 

Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Sir Graeme Davies Building, Glasgow G12 8QQ, Scotland.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 21.62 kDa 
• Atom Count: 1,538 
• Modelled Residue Count: 175 
• Deposited Residue Count: 201 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOL PEROXIDASE	A	201	Escherichia coli	Mutation(s): 1  EC: 1.11.1 (PDB Primary Data), 1.11.1.15 (PDB Primary Data)
UniProt
Find proteins for P0A862 (Escherichia coli (strain K12)) Explore P0A862  Go to UniProtKB:  P0A862

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.283 
• R-Value Work: 0.229 
• R-Value Observed: 0.232 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.37	α = 90
b = 71.75	β = 90
c = 121.93	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-05-02 
Deposition Author(s): Beckham, K.S.H., Roe, A.J., Byron, O., Gabrielsen, M.

Revision History  

• Version 1.0: 2012-05-02
  Type: Initial release
  
• Version 1.1: 2012-07-04
  Changes: Other
• Version 1.2: 2023-12-20
  Changes: Data collection, Database references, Other, Refinement description