2I1U

Mycobacterium tuberculosis thioredoxin C


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Mycobacterium tuberculosisthioredoxin C.

Hall, G.Shah, M.McEwan, P.A.Laughton, C.Stevens, M.Westwell, A.Emsley, J.

(2006) ACTA CRYSTALLOGR.,SECT.D 62: 1453-1457

  • DOI: 10.1107/S0907444906038212

  • PubMed Abstract: 
  • Mycobacterium tuberculosis is a facultative intracellular parasite of alveolar macrophages. M. tuberculosis is able to propagate in harsh environments within cells such as phagocytes, despite being exposed to reactive oxygen and nitrogen intermediate ...

    Mycobacterium tuberculosis is a facultative intracellular parasite of alveolar macrophages. M. tuberculosis is able to propagate in harsh environments within cells such as phagocytes, despite being exposed to reactive oxygen and nitrogen intermediates. The thioredoxin redox system is conserved across the phyla and has a well characterized role in resisting oxidative stress and influencing gene expression within prokaryotic and eukaryotic cells. M. tuberculosis thioredoxin (MtbTrx) has similar functions in redox homeostasis and it has recently been shown that alkyl hydroperoxidase C is efficiently reduced to its active form by MtbTrxC, supporting this notion. To address whether the MtbTrx has similar features to other thioredoxin structures and to examine the opportunities for designing drugs against this target, MtbTrxC has been crystallized and its structure determined to 1.3 A resolution. Unexpectedly, the structure demonstrates an interesting crystal packing in which five C-terminal residues from the MtbTrxC fold insert into a groove adjacent to the active site. A very similar interaction is observed in structures of human thioredoxins bound to peptides from the target proteins NF-kappaB and Ref-1.


    Organizational Affiliation

    Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, England. paxgh@nottingham.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin
A
121Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Gene Names: trxA (trx, trxC)
Find proteins for P9WG67 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WG67
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.212 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 26.478α = 88.37
b = 29.225β = 88.15
c = 30.954γ = 66.67
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
CCP4data scaling
CrystalCleardata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-12-19
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance