iCLIP reveals the function of hnRNP particles in splicing at individual nucleotide resolution.
iCLIP reveals the function of hnRNP particles in splicing at individual nucleotide resolution.
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DOI:
10.1038/nsmb.1838
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发表时间:
2010-07
影响因子:
16.8
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中科院分区:
文献类型:
--
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In the nucleus of eukaryotic cells, nascent transcripts are associated with heterogeneous nuclear ribonucleoprotein (hnRNP) particles that are nucleated by hnRNP C. Despite their abundance however, it remained unclear whether these particles control pre-mRNA processing. Here, we developed individual-nucleotide resolution UV-cross-linking and immunoprecipitation (iCLIP) to study the role of hnRNP C in splicing regulation. iCLIP data demonstrate that hnRNP C recognizes uridine tracts with a defined long-range spacing consistent with hnRNP particle organization. hnRNP particles assemble on both introns and exons, but remain generally excluded from splice sites. Integration of transcriptome-wide iCLIP data and alternative splicing profiles into an ‘RNA map’ indicates how the positioning of hnRNP particles determines their effect on inclusion of alternative exons. The ability of high-resolution iCLIP data to provide insights into the mechanism of this regulation holds promise for studies of other higher-order ribonucleoprotein complexes.
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影响因子:
5.3
作者:
STEITZ, JA;KAMEN, R
通讯作者:
KAMEN, R
影响因子:
64.8
作者:
通讯作者:
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影响因子:
4.8
作者:
Ule, J;Jensen, K;Darnell, RB
通讯作者:
Darnell, RB
影响因子:
30.8
作者:
Ule, J;Ule, A;Darnell, RB
通讯作者:
Darnell, RB
影响因子:
12.3
作者:
Langmead B;Trapnell C;Pop M;Salzberg SL
通讯作者:
Salzberg SL