The RNAissance family: SR proteins as multifaceted regulators of gene expression.

The RNAissance family: SR proteins as multifaceted regulators of gene expression.
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DOI:
10.1002/wrna.1260
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发表时间:
2015-01
影响因子:
7.3
通讯作者:
Sanford, Jeremy R.
Sanford, Jeremy R.
中科院分区:
生物学2区
文献类型:
--
作者:
Howard, Jonathan M.;Sanford, Jeremy R.

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富含丝氨酸和精氨酸的蛋白在真核生物基因表达途径中发挥着多种作用。SR蛋白最初被描述为构成性剪接因子和可选剪接因子,现在很清楚,SR蛋白是外显子身份的关键决定因素,并作为分子接头起作用,将前mrna连接到剪接机制。此外,SR蛋白现在涉及mRNA和ncRNA加工的许多方面,远远超出剪接。这些意想不到的作用,包括RNA转录、输出、翻译和衰变,可能被证明是规律而不是例外。简单地将这一RNA结合蛋白家族定义为剪接因子,掩盖了SR蛋白在转录后基因表达中的更广泛作用。
Serine and Arginine-rich (SR) proteins play multiple roles in the eukaryotic gene expression pathway. Initially described as constitutive and alternative splicing factors, it is now clear that SR proteins are key determinants of exon identity and function as molecular adaptors, linking the pre-mRNA to the splicing machinery. In addition, SR proteins are now implicated in many aspects of mRNA and ncRNA processing well beyond splicing. These unexpected roles, including RNA transcription, export, translation and decay may prove to be the rule rather than the exception. To simply define this family of RNA binding proteins as splicing factors belies the broader roles of SR proteins in post-transcriptional gene expression.
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