1NWA

Structure of Mycobacterium tuberculosis Methionine Sulfoxide Reductase A in Complex with Protein-bound Methionine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Mycobacterium tuberculosis Methionine Sulfoxide Reductase A in Complex with Protein-bound Methionine

Taylor, A.B.Benglis Jr., D.M.Dhandayuthapani, S.Hart, P.J.

(2003) J.Bacteriol. 185: 4119-4126


  • PubMed Abstract: 
  • Peptide methionine sulfoxide reductase (MsrA) repairs oxidative damage to methionine residues arising from reactive oxygen species and reactive nitrogen intermediates. MsrA activity is found in a wide variety of organisms, and it is implicated as one ...

    Peptide methionine sulfoxide reductase (MsrA) repairs oxidative damage to methionine residues arising from reactive oxygen species and reactive nitrogen intermediates. MsrA activity is found in a wide variety of organisms, and it is implicated as one of the primary defenses against oxidative stress. Disruption of the gene encoding MsrA in several pathogenic bacteria responsible for infections in humans results in the loss of their ability to colonize host cells. Here, we present the X-ray crystal structure of MsrA from the pathogenic bacterium Mycobacterium tuberculosis refined to 1.5 A resolution. In contrast to the three catalytic cysteine residues found in previously characterized MsrA structures, M. tuberculosis MsrA represents a class containing only two functional cysteine residues. The structure reveals a methionine residue of one MsrA molecule bound at the active site of a neighboring molecule in the crystal lattice and thus serves as an excellent model for protein-bound methionine sulfoxide recognition and repair.


    Organizational Affiliation

    Department of Biochemistry and the X-Ray Crystallography Core Laboratory, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peptide methionine sulfoxide reductase msrA
A
203Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Gene Names: msrA
EC: 1.8.4.11
Find proteins for P9WJM5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WJM5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.550α = 90.00
b = 64.110β = 90.00
c = 73.560γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
CrystalCleardata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-08
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance