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Degrade Green Fluorescent Protein (deGradFP) Method in Trypanosoma brucei
Midori Ishii1, Bungo Akiyoshi2
1Centre for Cell Biology, Institute of Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
Methods in Molecular Biology (Clifton, N.J.)
|August 10, 2026
Summary
We adapted the degrade green fluorescent protein (deGradFP) method to rapidly degrade kinetochore proteins in Trypanosoma brucei. This workflow enables efficient protein knockdown in this important parasite.
Area of Science:
- Molecular Biology
- Parasitology
- Biochemistry
Background:
- Degrade green fluorescent protein (deGradFP) is a method for targeted protein degradation.
- It utilizes an anti-GFP nanobody to direct GFP-fusion proteins to the ubiquitin-proteasome system.
- This technique was initially developed in Drosophila melanogaster.
Purpose of the Study:
- To adapt the deGradFP system for use in the kinetoplastid parasite Trypanosoma brucei.
- To enable rapid degradation of kinetochore proteins with inherently low turnover rates.
- To establish a workflow for deGradFP application in T. brucei.
Main Methods:
- Fusion of target kinetochore proteins with GFP.
- Expression of an anti-GFP nanobody in T. brucei.
- Utilizing the endogenous ubiquitin-proteasome pathway for protein degradation.
- Monitoring protein levels via Western blot or microscopy.
Main Results:
- Successful implementation of the deGradFP system in T. brucei.
- Demonstrated rapid degradation of specific kinetochore proteins.
- Validation of the workflow for protein knockdown studies.
Conclusions:
- The deGradFP method is effectively adapted for Trypanosoma brucei.
- This provides a powerful tool for studying kinetochore protein function in T. brucei.
- The established workflow facilitates research on essential kinetoplastid parasite biology.
