Abstract
Leptomonas seymouri, a monogenetic trypanosomatid originally isolated from Dysdercus suturellus (Hemiptera), was used to develop a reverse genetic system for trypanosomatid flagellates. In many eukaryotic cell types, reverse genetics has proven to be a powerful tool for defining structure/function relationships within genes. The mini-exon genes of trypanosomatids encode key components of all cellular mRNAs. This component is a 5' "leader" RNA that is spliced onto all mRNA precursors during mRNA formation within the cell nucleus. The data presented here indicate that structure/function relationships within the mini-exon gene can be probed using the molecular genetic system developed and characterized for L. seymouri.
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