Orphon spliced-leader sequences form part of a repetitive element in Angiostrongylus cantonensis.

Abstract:

:In nematodes, the 22 nucleotide (nt) spliced leader (SL) is normally encoded by a multi-copy, tandemly reiterated SL gene and is trans-spliced from SL-RNA onto the 5' end of a subset of mRNAs. We have found that the SL is also encoded at multiple (> 100) orphon genomic sites in the parasitic nematode Angiostrongylus cantonensis. At these sites the sequence forms part of a 198 bp repetitive element (designated con-198). Transcription from two genomic elements that contain the con-198 sequence has been characterised. At one element (G-2) an approximately 850 nt RNA with an internal SL is transcribed. At the other (G-1), transcription takes place 3 kb downstream of the con-198 sequence.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Joshua GW,Perler FB,Wang CC

doi

10.1093/nar/23.6.1030

subject

Has Abstract

pub_date

1995-03-25 00:00:00

pages

1030-5

issue

6

eissn

0305-1048

issn

1362-4962

pii

4a0690

journal_volume

23

pub_type

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