5VIA

Crystal structural of Leishmania major pseudoperoxidase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.764 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure and functional analysis of Leishmania major pseudoperoxidase.

Chreifi, G.Dejam, D.Poulos, T.L.

(2017) J. Biol. Inorg. Chem. 22: 919-927

  • DOI: 10.1007/s00775-017-1469-9

  • PubMed Abstract: 
  • Leishmania major pseudoperoxidase (LmPP) is a recently discovered heme protein expressed by the human pathogen. Previous in vivo and in vitro studies suggest that LmPP is a crucial element of the pathogen's defense mechanism against the reactive nitr ...

    Leishmania major pseudoperoxidase (LmPP) is a recently discovered heme protein expressed by the human pathogen. Previous in vivo and in vitro studies suggest that LmPP is a crucial element of the pathogen's defense mechanism against the reactive nitrogen species peroxynitrite produced during the host immune response. To shed light on the potential mechanism of peroxynitrite detoxification, we have determined the 1.76-Å X-ray crystal structure of LmPP, revealing a striking degree of homology with heme peroxidases. The most outstanding structural feature is a Cys/His heme coordination, which corroborates previous spectroscopic and mutagenesis studies. We also used a combination of stopped-flow and electron paramagnetic spectroscopies that together suggest that peroxynitrite is not a substrate for LmPP catalysis, leaving the function of LmPP an open question.


    Organizational Affiliation

    Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, 92697-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pseudoperoxidase
A
294Leishmania majorMutation(s): 0 
Find proteins for Q4QC30 (Leishmania major)
Go to UniProtKB:  Q4QC30
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.764 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.196 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 63.680α = 90.00
b = 63.680β = 90.00
c = 152.490γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
AutoSolphasing
Aimlessdata scaling
iMOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM57353

Revision History 

  • Version 1.0: 2017-06-21
    Type: Initial release
  • Version 1.1: 2017-08-02
    Type: Author supporting evidence, Database references