4WWS

Structure of Chlorite dismutase-like Protein from Listeria monocytogenes


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and heme-binding properties of HemQ (chlorite dismutase-like protein) from Listeria monocytogenes.

Hofbauer, S.Hagmuller, A.Schaffner, I.Mlynek, G.Krutzler, M.Stadlmayr, G.Pirker, K.F.Obinger, C.Daims, H.Djinovic-Carugo, K.Furtmuller, P.G.

(2015) Arch Biochem Biophys 574: 36-48

  • DOI: 10.1016/j.abb.2015.01.010
  • Primary Citation of Related Structures:  
    4WWS

  • PubMed Abstract: 
  • Chlorite dismutase-like proteins are structurally closely related to functional chlorite dismutases which are heme b-dependent oxidoreductases capable of reducing chlorite to chloride with simultaneous production of dioxygen. Chlorite dismutase-like proteins are incapable of performing this reaction and their biological role is still under discussion ...

    Chlorite dismutase-like proteins are structurally closely related to functional chlorite dismutases which are heme b-dependent oxidoreductases capable of reducing chlorite to chloride with simultaneous production of dioxygen. Chlorite dismutase-like proteins are incapable of performing this reaction and their biological role is still under discussion. Recently, members of this large protein family were shown to be involved in heme biosynthesis in Gram-positive bacteria, and thus the protein was renamed HemQ in these organisms. In the present work the structural and heme binding properties of the chlorite dismutase-like protein from the Gram-positive pathogen Listeria monocytogenes (LmCld) were analyzed in order to evaluate its potential role as a regulatory heme sensing protein. The homopentameric crystal structure (2.0Å) shows high similarity to chlorite-degrading chlorite dismutases with an important difference in the structure of the putative substrate and heme entrance channel. In solution LmCld is a stable hexamer able to bind the low-spin ligand cyanide. Heme binding is reversible with KD-values determined to be 7.2μM (circular dichroism spectroscopy) and 16.8μM (isothermal titration calorimetry) at pH 7.0. Both acidic and alkaline conditions promote heme release. Presented biochemical and structural data reveal that the chlorite dismutase-like protein from L. monocytogenes could act as a potential regulatory heme sensing and storage protein within heme biosynthesis.


    Organizational Affiliation

    Department of Chemistry, Division of Biochemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria. Electronic address: paul.furtmueller@boku.ac.at.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative heme-dependent peroxidase lmo2113 ABCDE253Listeria monocytogenes EGD-eMutation(s): 0 
Gene Names: lmo2113chdChemQ
EC: 1.11.1 (PDB Primary Data), 1.3.98.5 (UniProt)
Find proteins for Q8Y5F1 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e))
Explore Q8Y5F1 
Go to UniProtKB:  Q8Y5F1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78α = 90
b = 128.32β = 105.91
c = 78.15γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XSCALEdata scaling
BALBESphasing
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-05-06
    Changes: Database references
  • Version 1.2: 2017-11-01
    Changes: Author supporting evidence, Derived calculations, Refinement description