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Updated: May 28, 2026
Total Protein Extraction and 2-D Gel Electrophoresis Methods for Burkholderia Species
Published on: October 15, 2013
A proteome reference map of the causative agent of melioidosis Burkholderia pseudomallei
Patompon Wongtrakoongate1, Sittiruk Roytrakul, Sukkid Yasothornsrikul
1Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. pexcotung@gmail.com
Abstract:
Burkholderia pseudomallei is the etiologic agent of melioidosis. Using 2DE and MALDI-TOF MS, we report here a proteome reference map constructed from early stationary phase, a bacterial adaptation process. We identified 282 protein spots representing 220 ORFs; many of them have been implicated in bacterial pathogenesis. Up to 20% of identified ORFs belong to post-translational modification and stress responses. The proteome reference map will support future analysis of the bacterial gene and environmental regulation and facilitate comparative proteomics with its sibling species.
Insights
Researchers created a proteome map for Burkholderia pseudomallei, the cause of melioidosis. This map identifies key proteins involved in pathogenesis and stress responses, aiding future studies on bacterial regulation and evolution.
Area of Science:
- Microbiology
- Proteomics
- Bacterial Pathogenesis
Background:
- Burkholderia pseudomallei is the bacterium responsible for causing melioidosis.
- Understanding the bacterial proteome is crucial for identifying virulence factors and developing effective treatments.
- Bacterial adaptation processes, such as entering the stationary phase, significantly alter protein expression.
Purpose of the Study:
- To construct a comprehensive proteome reference map for Burkholderia pseudomallei during its early stationary phase.
- To identify proteins involved in bacterial pathogenesis, post-translational modification, and stress responses.
- To provide a foundation for future comparative proteomics and gene regulation studies.
Main Methods:
- Two-dimensional electrophoresis (2DE) was employed to separate bacterial proteins.
- Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) was used for protein identification.
- Proteins were analyzed from Burkholderia pseudomallei cultures in the early stationary phase.
Main Results:
- A proteome reference map was successfully generated, detailing protein expression during bacterial adaptation.
- A total of 282 protein spots were identified, corresponding to 220 open reading frames (ORFs).
- Approximately 20% of the identified ORFs were related to post-translational modification and stress response mechanisms, highlighting their importance in bacterial survival and virulence.
Conclusions:
- The established proteome map serves as a valuable resource for understanding Burkholderia pseudomallei biology.
- The identified proteins offer insights into the pathogenesis of melioidosis and bacterial adaptation strategies.
- This reference map will facilitate future research, including comparative proteomic analyses with related bacterial species.
