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Updated: May 2, 2026
Isolation of F1-ATPase from the Parasitic Protist Trypanosoma brucei
Published on: January 22, 2019
Proteins associated with SF3a60 in T. brucei
Benson Nyambega1, Claudia Helbig2, Daniel K Masiga3
1Laboratorio de Biología Molecular de la Enfermedad de Chagas, Instituto de Investigacíones en Ingeniería Genética y Biología Molecular (INGEBI), Buenos Aires, Argentina; Molecular Biology and Biotechnology Department, International Center for Insect Physiology and Ecology (ICIPE), Nairobi, Kenya; Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), Heidelberg, Germany.
This study characterizes Splicing Factor SF3a60 in Trypanosoma brucei, finding it essential for cell viability but not directly impacting trans-splicing. SF3a60 interacts with other key spliceosomal proteins, including SF3a120, SF3a66, and SAP130.
Area of Science:
- Molecular Biology
- Parasitology
- Gene Expression
Background:
- Trypanosoma brucei utilizes trans-splicing for mRNA maturation.
- The trans-spliceosome machinery is crucial for gene expression in trypanosomatids.
- Many protein factors of the trans-spliceosome remain uncharacterized.
Purpose of the Study:
- To characterize the Splicing Factor SF3a60 in Trypanosoma brucei.
- To investigate the role of SF3a60 in trans-splicing.
- To identify SF3a60 interacting protein partners.
Main Methods:
- Epitope tagging and nuclear localization studies of SF3a60.
- Depletion studies to assess SF3a60's effect on cell viability and trans-splicing.
- Yeast-2-hybrid screening to identify interacting proteins.
- Tandem affinity purification and mass spectrometry for interaction validation.
Main Results:
- SF3a60 localizes to the nucleus in Trypanosoma brucei.
- SF3a60 is essential for cell viability.
- SF3a60 depletion did not show a detectable effect on trans-splicing efficiency.
- SF3a60 was found to interact with SF3a120, SF3a66, and SAP130.
Conclusions:
- SF3a60 is an essential protein in Trypanosoma brucei.
- While essential, SF3a60's direct role in trans-splicing requires further investigation.
- SF3a60 is part of a complex involving SF3a120, SF3a66, and SAP130, contributing to spliceosome function.
