Perilous journey: a tour of the ubiquitin-proteasome system.

Perilous journey: a tour of the ubiquitin-proteasome system.
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DOI:
10.1016/j.tcb.2013.12.003
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发表时间:
2014-06
影响因子:
19
通讯作者:
Mayor, Thibault
Mayor, Thibault
中科院分区:
生物学1区
文献类型:
--
作者:
Kleiger, Gary;Mayor, Thibault

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真核细胞具有通过泛素-蛋白酶体系统(UPS)降解蛋白质的能力。蛋白质在与泛素链结合后被降解,然后被导向26 S蛋白酶体(一种大分子蛋白酶)。泛素向蛋白质的转移及其随后的降解是高度复杂的过程,新的研究开始揭示细胞中泛素化和降解如何发生的分子细节。我们回顾了一些新的数据,提供了这些过程如何发生的见解。虽然经常观察到不同的机制,但UPS如何引导蛋白质底物通过其最终旅程的一些共同主题正在出现。
Eukaryotic cells are equipped to degrade proteins via the ubiquitin–proteasome system (UPS). Proteins become degraded upon their conjugation to chains of ubiquitin where they are then directed to the 26S proteasome, a macromolecular protease. The transfer of ubiquitin to proteins and their subsequent degradation are highly complex processes, and new research is beginning to uncover the molecular details of how ubiquitination and degradation take place in the cell. We review some of the new data providing insights into how these processes occur. Although distinct mechanisms are often observed, some common themes are emerging for how the UPS guides protein substrates through their final journey.
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