Structure and Expression of Novel Spliced Leader RNA Genes in Caenorhabditis elegans(∗)

Approximately 25% of Caenorhabditis elegans genes are organized as operons. Polycistronic transcripts are converted to monocistronic mRNAs by 3′ cleavage/polyadenylation and 5′ trans-splicing with untranslated, 5′-terminal exons called spliced leaders, (SLs). The 5′ termini of mRNAs encoded by downs...

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