1NWA

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

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.161 

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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

  • DOI: 10.1128/jb.185.14.4119-4126.2003
  • Primary Citation of Related Structures:  
    1NWA

  • 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 of the primary defenses against oxidative stress ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide methionine sulfoxide reductase msrAA203Mycobacterium tuberculosisMutation(s): 0 
Gene Names: msrA
EC: 1.8.4.6 (PDB Primary Data), 1.8.4.11 (UniProt)
UniProt
Find proteins for P9WJM5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WJM5 
Go to UniProtKB:  P9WJM5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WJM5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.55α = 90
b = 64.11β = 90
c = 73.56γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CrystalCleardata reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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