1PRX

HORF6 A NOVEL HUMAN PEROXIDASE ENZYME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a novel human peroxidase enzyme at 2.0 A resolution.

Choi, H.J.Kang, S.W.Yang, C.H.Rhee, S.G.Ryu, S.E.

(1998) Nat.Struct.Mol.Biol. 5: 400-406


  • PubMed Abstract: 
  • Hydrogen peroxide (H2O2) has been implicated recently as an intracellular messenger that affects cellular processes including protein phosphorylation, transcription and apoptosis. A set of novel peroxidases, named peroxiredoxins (Prx), regulate the i ...

    Hydrogen peroxide (H2O2) has been implicated recently as an intracellular messenger that affects cellular processes including protein phosphorylation, transcription and apoptosis. A set of novel peroxidases, named peroxiredoxins (Prx), regulate the intracellular concentration of H2O2 by reducing it in the presence of an appropriate electron donor. The crystal structure of a human Prx enzyme, hORF6, reveals that the protein contains two discrete domains and forms a dimer. The N-terminal domain has a thioredoxin fold and the C-terminal domain is used for dimerization. The active site cysteine (Cys 47), which exists as cysteine-sulfenic acid in the crystal, is located at the bottom of a relatively narrow pocket. The positively charged environment surrounding Cys 47 accounts for the peroxidase activity of the enzyme, which contains no redox cofactors.


    Organizational Affiliation

    Division of Protein Engineering, Korea Research Institute of Bioscience and Biotechnology, KIST, Yusong, Taejon, South Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HORF6
A, B
224Homo sapiensMutation(s): 1 
Gene Names: PRDX6 (AOP2, KIAA0106)
EC: 1.11.1.15
Find proteins for P30041 (Homo sapiens)
Go to Gene View: PRDX6
Go to UniProtKB:  P30041
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
A, B
L-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.191 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.850α = 90.00
b = 75.170β = 110.21
c = 63.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
R-AXISdata scaling
X-PLORrefinement
R-AXISdata reduction
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance