Abstract:
:Adenosine to inosine editing of mRNA from the human 5-HT2C receptor gene (HTR2C) occurs at five exonic positions (A-E) in a stable stem-loop that includes the normal 5' splice site of intron 5 and is flanked by two alternative splice sites. Using in vitro editing, we identified a novel editing site (F) located in the intronic part of the stem-loop and demonstrated editing at this site in human brain. We have shown that in cell culture, base substitutions to mimic editing at different combinations of the six sites profoundly affect relative splicing at the normal and the upstream alternative splice site, but splicing at the downstream alternative splice site was consistently rare. Editing combinations in different splice variants from human brain were determined and are consistent with the effects of editing on splicing observed in cell culture. As RNA editing usually occurs close to exon/intron boundaries, this is likely to be a general phenomenon and suggests an important novel role for RNA editing.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Flomen R,Knight J,Sham P,Kerwin R,Makoff Adoi
10.1093/nar/gkh536keywords:
subject
Has Abstractpub_date
2004-04-15 00:00:00pages
2113-22issue
7eissn
0305-1048issn
1362-4962pii
32/7/2113journal_volume
32pub_type
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