Angulin proteins ILDR1 and ILDR2 regulate alternative pre-mRNA splicing through binding to splicing factors TRA2A, TRA2B, or SRSF1.
Angulin proteins ILDR1 and ILDR2 regulate alternative pre-mRNA splicing through binding to splicing factors TRA2A, TRA2B, or SRSF1.
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Angulin 蛋白 ILDR1 和 ILDR2 通过与剪接因子 TRA2A、TRA2B 或 SRSF1 结合来调节选择性前 mRNA 剪接
DOI:
10.1038/s41598-017-07530-z
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发表时间:
2017-08-07
影响因子:
4.6
通讯作者:
Xu Z
中科院分区:
文献类型:
--
作者:
Liu Y;Nie H;Liu C;Zhai X;Sang Q;Wang Y;Shi D;Wang L;Xu Z
Angulin proteins are a group of evolutionally conserved type I transmembrane proteins that contain an extracellular Ig-like domain. In mammals, three angulin proteins have been identified, namely immunoglobulin-like domain containing receptor 1 (ILDR1), immunoglobulin-like domain containing receptor 2 (ILDR2), and lipolysis-stimulated lipoprotein receptor (LSR). All three proteins have been shown to localize at tight junctions (TJs) and are important for TJ formation. Mutations inILDR1gene have been shown to cause non-syndromic hearing loss (NSHL). In the present work, we show that ILDR1 binds to splicing factors TRA2A, TRA2B, and SRSF1, and translocates into the nuclei when the splicing factors are present. Moreover, ILDR1 affects alternative splicing ofTubulin delta 1(TUBD1),IQ motif containing B1(IQCB1), andProtocadherin 19(Pcdh19). Further investigation show that ILDR2, but not LSR, also binds to the splicing factors and regulates alternative splicing. When endogenous ILDR1 and ILDR2 expression is knockdown with siRNAs in cultured cells, alternative splicing ofTUBD1andIQCB1is affected. In conclusion, we show here that angulin proteins ILDR1 and ILDR2 are involved in alternative pre-mRNA splicing via binding to splicing factors TRA2A, TRA2B, or SRSF1.
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