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Crystal structure of an inorganic pyrophosphatase from Chlamydia trachomatis D/UW-3/Cx
Jasmine Maddy1, Bart L Staker2, Sandhya Subramanian2
1Department of Chemistry and Biochemistry, Hampton University, 100 East Queen Street, Hampton, VA 23668, USA.
Abstract:
Chlamydia trachomatis is the leading cause of bacterial sexually transmitted infections globally and is one of the most commonly reported infections in the United States. There is a need to develop new therapeutics due to drug resistance and the failure of current treatments to clear persistent infections. Structures of potential C. trachomatis rational drug-discovery targets, including C. trachomatis inorganic pyrophosphatase (CtPPase), have been determined by the Seattle Structural Genomics Center for Infectious Disease. Inorganic pyrophosphatase hydrolyzes inorganic pyrophosphate during metabolism. Furthermore, bacterial inorganic pyrophosphatases have shown promise for therapeutic discovery. Here, a 2.2 Å resolution X-ray structure of CtPPase is reported. The crystal structure of CtPPase reveals shared structural features that may facilitate the repurposing of inhibitors identified for bacterial inorganic pyrophosphatases as starting points for new therapeutics for C. trachomatis.
Insights
New research reveals the structure of Chlamydia trachomatis inorganic pyrophosphatase (CtPPase), a potential target for new antibiotics. This finding could aid in developing treatments for drug-resistant chlamydia infections.
Area of Science:
- Microbiology
- Structural Biology
- Drug Discovery
Background:
- Chlamydia trachomatis is a major cause of bacterial sexually transmitted infections globally.
- Drug resistance and treatment failures necessitate novel therapeutic strategies for chlamydia.
- Bacterial inorganic pyrophosphatases are promising targets for antimicrobial drug discovery.
Purpose of the Study:
- To determine the X-ray crystal structure of Chlamydia trachomatis inorganic pyrophosphatase (CtPPase).
- To explore CtPPase as a potential drug target for developing new chlamydia therapeutics.
Main Methods:
- X-ray crystallography was used to determine the structure of CtPPase.
- The structure was resolved at a resolution of 2.2 Å.
Main Results:
- The 2.2 Å resolution X-ray crystal structure of CtPPase was successfully determined.
- The structure reveals conserved features shared with other bacterial inorganic pyrophosphatases.
Conclusions:
- The determined CtPPase structure provides a basis for rational drug design.
- Structural similarities may allow repurposing of existing inhibitors for novel chlamydia treatments.
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