The parasitic nematode Ascaris spp. contains a 22-nucleotide spliced-leader (SL) sequence identical to the trans-SL previously described in Caenorhabditis elegans and other nematodes. The SL comprises the first 22 nucleotides of a approximately 110-base RNA and is transcribed by RNA polymerase II. The SL RNA contains a trimethylguanosine cap and a consensus Sm binding site. Furthermore, the Ascaris SL RNA has the potential to adopt a secondary structure which is nearly identical to potential secondary structures of similar SL RNAs in C. elegans and Brugia malayi.
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| http://dx.doi.org/10.1128/mcb.9.8.3543-3547.1989 | DOI Listing |
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