The cancer-associated U2AF35 470A>G (Q157R) mutation creates an in-frame alternative 5′ splice site that impacts splicing regulation in Q157R patients

The cancer-associated U2AF35 470A>G (Q157R) mutation creates an in-frame alternative 5′ splice site that impacts splicing regulation in Q157R patients
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DOI:
10.1261/rna.061432.117
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发表时间:
2017-12-01
期刊:
RNA
影响因子:
4.5
通讯作者:
Heyd, Florian
Heyd, Florian
中科院分区:
生物学3区
文献类型:
--
作者:
Herdt, Olga;Neumann, Alexander;Heyd, Florian

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最近的工作已经确定了癌症相关的U2 AF 35错义突变在两个锌指(ZnF)结构域,但很少有人知道Q157 R/P取代内的第二个ZnF。令人惊讶的是,我们发现c.470A>G突变不仅导致Q157 R取代,而且还产生了一个替代的5'剪接位点(ss),导致四个氨基酸(Q157 Rdel)的缺失。Q157 P、Q157 R和Q157 Rdel控制细胞培养物和人类患者中不同外显子组的选择性剪接,表明不同靶点的错误剪接可能导致细胞畸变。我们的数据强调了探索改变蛋白质序列以外的错义突变的重要性。
Recent work has identified cancer-associated U2AF35 missense mutations in two zinc-finger (ZnF) domains, but little is known about Q157R/P substitutions within the second ZnF. Surprisingly, we find that the c.470A>G mutation not only leads to the Q157R substitution, but also creates an alternative 5' splice site (ss) resulting in the deletion of four amino acids (Q157Rdel). Q157P, Q157R, and Q157Rdel control alternative splicing of distinct groups of exons in cell culture and in human patients, suggesting that missplicing of different targets may contribute to cellular aberrations. Our data emphasize the importance to explore missense mutations beyond altered protein sequence.