Regulation of TGF-β signal transduction by mono- and deubiquitylation of Smads.

Regulation of TGF-β signal transduction by mono- and deubiquitylation of Smads.
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DOI:
10.1016/j.febslet.2012.03.037
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发表时间:
2012-07-04
期刊:
影响因子:
3.5
通讯作者:
Newfeld SJ
Newfeld SJ
中科院分区:
生物学3区
文献类型:
--
作者:
Dupont S;Inui M;Newfeld SJ

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多泛素化导致蛋白酶体降解是调控TGF-β信号转导组分(如受体和Smads)的成熟机制。最近,Smad4和受体相关Smads的单泛素化作用同样重要,该作用在不降解蛋白质的情况下调节其功能。在发现TGF-β信号转导所需的去泛素化酶后,Smad的单泛素化被发现,这表明Smad的单泛素化和去泛素化是TGF-β信号转导所需的连续循环。本文总结和讨论了Smad单泛素化和去泛素化的最新研究进展。
Polyubiquitylation leading to proteasomal degradation is a well-established mechanism for regulating TGF-β signal transduction components such as receptors and Smads. Recently, an equally important role was suggested for monoubiquitylation of both Smad4 and Receptor-associated Smads that regulates their function without protein degradation. Monoubiquitylation of Smads was discovered following the identification of deubiquitylases required for TGF-β signaling, suggesting that continuous cycles of Smad mono- and deubiquitylation are required for proper TGF-β signal transduction. Here we summarize and discuss recent work on Smad mono- and deubiquitylation.
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