Comparing the 5S ribosomal RNA spacer of Dirofilaria repens and D. immitis, we found that in D. repens PCR generates two amplification products. In both products, the putative spliced leader 1 sequences (SL1) show some nucleotide substitutions compared to the canonical SL1 sequence of nematodes. SL1 is a short sequence transferred to the 5¢ end of most messenger RNAs through a trans-splicing reaction. All the other filariae studied thus far amplify a single fragment showing a canonical SL1 sequence. D. repens appears thus peculiar.
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Titolo: | Unusual organization of the 5S ribosomal spacer in Dirofilaria repens: absence of a canonical spliced leader 1 sequence | |
Autori: | ||
Data di pubblicazione: | 1999 | |
Rivista: | ||
Handle: | http://hdl.handle.net/11573/77 | |
Appartiene alla tipologia: | 01a Articolo in rivista |