5UCX

Structure of S78C Human Peroxiredoxin 3 as three stacked rings


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Quaternary structure influences the peroxidase activity of peroxiredoxin 3.

Yewdall, N.A.Peskin, A.V.Hampton, M.B.Goldstone, D.C.Pearce, F.G.Gerrard, J.A.

(2018) Biochem. Biophys. Res. Commun. 497: 558-563

  • DOI: 10.1016/j.bbrc.2018.02.093

  • PubMed Abstract: 
  • Peroxiredoxins are abundant peroxidase enzymes that are key regulators of the cellular redox environment. A major subgroup of these proteins, the typical 2-Cys peroxiredoxins, can switch between dimers and decameric or dodecameric rings, during the c ...

    Peroxiredoxins are abundant peroxidase enzymes that are key regulators of the cellular redox environment. A major subgroup of these proteins, the typical 2-Cys peroxiredoxins, can switch between dimers and decameric or dodecameric rings, during the catalytic cycle. The necessity of this change in quaternary structure for function as a peroxidase is not fully understood. In order to explore this, human peroxiredoxin 3 (Prx3) protein was engineered to form both obligate dimers (S75E Prx3) and stabilised dodecameric rings (S78C Prx3), uncoupling structural transformations from the catalytic cycle. The obligate dimer, S75E Prx3, retained catalytic activity towards hydrogen peroxide, albeit significantly lower than the wildtype and S78C proteins, suggesting an evolutionary advantage of having higher order self-assemblies.


    Organizational Affiliation

    School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand; Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch 8140, New Zealand. Electronic address: n.a.yewdall@tue.nl.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin-dependent peroxide reductase, mitochondrial
A, B, C, D, E, F, G, H, I
201Homo sapiensMutation(s): 1 
Gene Names: PRDX3 (AOP1)
EC: 1.11.1.15
Find proteins for P30048 (Homo sapiens)
Go to Gene View: PRDX3
Go to UniProtKB:  P30048
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.194 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 133.449α = 90.00
b = 167.590β = 90.00
c = 221.520γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
Aimlessdata scaling
MOSFLMdata reduction
MOSFLMdata collection
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Army Research OfficeUnited States--

Revision History 

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-02-21
    Type: Database references
  • Version 1.2: 2018-02-28
    Type: Database references
  • Version 1.3: 2018-03-14
    Type: Database references