An Intronic Splicing Enhancer Binds U1 snRNPs To Enhance Splicing and Select 5′ Splice Sites
نویسندگان
چکیده
منابع مشابه
An Alu-derived intronic splicing enhancer facilitates intronic processing and modulates aberrant splicing in ATM
We have previously reported a natural GTAA deletion within an intronic splicing processing element (ISPE) of the ataxia telangiectasia mutated (ATM) gene that disrupts a non-canonical U1 snRNP interaction and activates the excision of the upstream portion of the intron. The resulting pre-mRNA splicing intermediate is then processed to a cryptic exon, whose aberrant inclusion in the final mRNA i...
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Fidelity and efficiency of pre-mRNA splicing are critical for generating functional mRNAs, but how such accuracy in 5' splice site (SS) selection is attained is not fully clear. Through a series of yeast genetic screens, we isolated alleles of prp28 that improve splicing of suboptimal 5'SS substrates, demonstrating that WT-Prp28p proofreads, and consequently rejects, poor 5'SS. Prp28p is though...
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Alternative 5' splice site selection is one of the major pathways resulting in mRNA diversification. Regulation of this type of alternative splicing depends on the presence of regulatory elements that activate or repress the use of competing splice sites, usually leading to the preferential use of the proximal splice site. However, the mechanisms involved in proximal splice site selection and t...
متن کاملInteraction of hnRNPA1/A2 and DAZAP1 with an Alu-Derived Intronic Splicing Enhancer Regulates ATM Aberrant Splicing
We have previously identified an Alu-derived Intronic Splicing enhancer (ISE) in the Ataxia Teleangectasia Mutated gene (ATM) that facilitates intron pre-mRNA processing and leads to the inclusion of a cryptic exon in the final mRNA transcript. By using an RNA pull-down assay, we show here that hnRNPA1/A2, HuR and DAZAP1 splicing factors and DHX36 RNA helicase bind to the ISE. By functional stu...
متن کاملGeneral splicing factor SF2/ASF promotes alternative splicing by binding to an exonic splicing enhancer.
The general splicing factor SF2/ASF binds in a sequence-specific manner to a purine-rich exonic splicing enhancer (ESE) in the last exon of bovine growth hormone (bGH) pre-mRNA. More importantly, SF2/ASF stimulates in vitro splicing of bGH intron D through specific interaction with the ESE sequences. However, another general splicing factor, SC35, does not bind the ESE sequences and has no effe...
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ژورنال
عنوان ژورنال: Molecular and Cellular Biology
سال: 2000
ISSN: 0270-7306,1098-5549
DOI: 10.1128/mcb.20.24.9225-9235.2000