Regulation of TORC1 by ubiquitin through non-covalent binding.

Regulation of TORC1 by ubiquitin through non-covalent binding.
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DOI:
10.1007/s00294-016-0581-7
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发表时间:
2016-08
期刊:
影响因子:
2.5
通讯作者:
Jiang Y
Jiang Y
中科院分区:
生物学3区
文献类型:
--
作者:
Jiang Y

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泛素 (Ub) 通过以多泛素化和单泛素化形式与其他蛋白质共价连接来调节许多细胞过程。最近的一项酵母研究表明,泛素通过与 TORC1 调节亚基 Kog1 的非共价结合来控制 TORC1。这种结合可以稳定 Kog1 并防止其在应激条件下降解。这一发现揭示了 Ub 在 TORC1 功能中的新作用,并暗示了一种独特的机制,该机制归因于 Ub 在细胞信号传导中的作用。
Ubiquitin (Ub) regulates numerous cellular processes through covalent attachment to other proteins in the forms of poly- and mono-ubiquitination. A recent study in yeast shows that ubiquitin controls TORC1 through a noncovalent binding with Kog1, a regulatory subunit of TORC1. The binding stabilizes Kog1 and prevents its degradation under stress conditions. This finding unveils a novel role of Ub in TORC1 function and implicates a unique mechanism that attributes the action of Ub in cell signaling.