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Updated: Jul 18, 2026
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X-Ray Crystallography to Study the Oligomeric State Transition of the Thermotoga maritima M42 Aminopeptidase TmPep1050
Published on: May 13, 2020
Structure of Mycobacterium tuberculosis thioredoxin C
Gareth Hall1, Manish Shah, Paul A McEwan
1Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, England. paxgh@nottingham.ac.uk
Acta Crystallographica. Section D, Biological Crystallography
|December 2, 2006
Summary
Mycobacterium tuberculosis thioredoxin C (MtbTrxC) structure reveals a unique active site interaction. This finding offers new opportunities for developing drugs targeting tuberculosis by inhibiting MtbTrxC.
Area of Science:
- Biochemistry
- Structural Biology
- Microbiology
Background:
- Mycobacterium tuberculosis (M. tuberculosis) survives oxidative stress within macrophages.
- The thioredoxin redox system is crucial for cellular defense against oxidative stress and gene regulation.
- M. tuberculosis thioredoxin (MtbTrx) plays a role in redox homeostasis and reducing alkyl hydroperoxidase C.
Purpose of the Study:
- To determine the crystal structure of MtbTrxC.
- To investigate potential drug design strategies targeting MtbTrxC.
- To compare MtbTrxC structure with other thioredoxins.
Main Methods:
- X-ray crystallography of MtbTrxC.
- Structure determination at 1.3 A resolution.
Main Results:
- The MtbTrxC structure revealed an unexpected crystal packing.
- Five C-terminal residues of MtbTrxC insert into a groove near the active site.
- This interaction resembles that of human thioredoxins with target protein peptides.
Conclusions:
- The unique MtbTrxC structure provides insights into its function.
- The observed interaction suggests potential drug targets for tuberculosis treatment.
- Further research can explore MtbTrxC as a drug target for M. tuberculosis infections.
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