4XS1

Salmonella typhimurium AhpC T43V mutant

• PDB DOI: https://doi.org/10.2210/pdb4XS1/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2015-01-21 Released: 2016-01-27 
• Deposition Author(s): Perkins, A., Nelson, K., Parsonage, D., Poole, L., Karplus, P.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.218 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 

Literature

Experimentally Dissecting the Origins of Peroxiredoxin Catalysis.

Nelson, K.J., Perkins, A., Van Swearingen, A.E.D., Hartman, S., Brereton, A.E., Parsonage, D., Salsbury Jr., F.R., Karplus, P.A., Poole, L.B.

(2018) Antioxid Redox Signal 28: 521-536

• PubMed: 28375740 
• DOI: https://doi.org/10.1089/ars.2016.6922
• Primary Citation of Related Structures:  
  4XRA, 4XRD, 4XS1, 4XS4, 4XS6, 4XTS, 5UKA


• PubMed Abstract: 
  

  Peroxiredoxins (Prxs) are ubiquitous cysteine-based peroxidases involved in oxidant defense and signal transduction. Despite much study, the precise roles of conserved residues remain poorly defined. In this study, we carried out extensive functional and structural characterization of 10 variants of such residues in a model decameric bacterial Prx.

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Organizational Affiliation: 

1 Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina.

Biological Assembly 1  

Global Symmetry: Dihedral - D5  (Explore in 3D)
Global Stoichiometry: Homo 10-mer - A10 

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

Macromolecule Content

• Total Structure Weight: 103.59 kDa 
• Atom Count: 6,968 
• Modelled Residue Count: 822 
• Deposited Residue Count: 930 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alkyl hydroperoxide reductase subunit C	A, B, C, D, E	186	Salmonella enterica subsp. enterica serovar Typhimurium	Mutation(s): 1  EC: 1.11.1.15
UniProt
Find proteins for P0A251 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A251  Go to UniProtKB:  P0A251

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	K [auth C]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
K	F [auth A], H [auth B], L [auth D]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N
CL	G [auth A], I [auth B], J [auth C], M [auth D], N [auth E]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.218 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 126.989	α = 90
b = 171.88	β = 90
c = 135.92	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-01-27 
Deposition Author(s): Perkins, A., Nelson, K., Parsonage, D., Poole, L., Karplus, P.A.

Revision History  

• Version 1.0: 2016-01-27
  Type: Initial release
  
• Version 1.1: 2019-08-28
  Changes: Data collection, Database references, Derived calculations
• Version 1.2: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description