Translation in Trypanosomatids

Part of the Nucleic Acids and Molecular Biology book series (NUCLEIC, volume 28)


Protein synthesis in trypanosomatids plays a key role in shaping the developmental program of gene expression during their complex life cycle. Trypanosomatids are well known for their unusual mechanisms and pathways, including trans-splicing of primary mRNAs. The Spliced Leader RNA donates a unique, hypermethylated cap-4 structure to all mRNAs, which requires special adaptations by the cap-binding complex. The cap-binding eIF4F anchors the translation initiation complex in the majority of cases. The trypanosomatid cap-binding proteins show evolutionary divergence, and cannot replace the function of their yeast counterparts. The molecules that comprise the cap-4 binding complex are described and compared to their orthologues from higher eukaryotes, trying to reveal their specific functions. A novel eIF4E-interacting protein is assumed to direct stage-specific translation pathways, adapted to the different environmental conditions. Special attention is given to the unusual finding that differential translation is driven by defined elements in the 3′ UTR, and potential mechanisms are discussed, including structural changes of the RNA. The effects of environmental switches on the translational machinery are also discussed.


Translation Initiation Internal Ribosome Entry Site High Eukaryote Stress Granule Rabbit Reticulocyte Lysate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Life SciencesBen Gurion University of the NegevBeer ShevaIsrael

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