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Ubiquitin-like proteins and their roles in archaea

机译:泛素样蛋白及其在古细菌中的作用

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This review highlights the finding that ubiquitin-like (Ubl) proteins of archaea (termed SAMPs) function not only as sulfur carriers but also as protein modifiers. UbaA (an El ubiquitin-activating enzyme homolog of archaea) is required for the SAMPs to be covalently attached to proteins. The SAMPs and UbaA are also needed to form sulfur-containing biomolecules (e.g., thiolated tRNA and molybdenum cofactor). These findings provide a new perspective on how Ubl proteins can serve as both sulfur carriers and protein modifiers in the absence of canonical E2 ubiquitin conjugating or E3 ubiquitin ligase enzyme homologs.
机译:这篇综述强调了发现,古细菌的泛素样(Ubl)蛋白(称为SAMPs)不仅起硫载体的作用,而且还起蛋白修饰剂的作用。要使SAMP与蛋白质共价连接,需要UbaA(古细菌的El泛素激活酶同源物)。还需要SAMP和UbaA来形成含硫的生物分子(例如硫醇化的tRNA和钼辅助因子)。这些发现为在没有规范的E2泛素结合或E3泛素连接酶同系物缺失的情况下Ubl蛋白如何同时充当硫载体和蛋白修饰剂提供了新的视角。

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