Critical observations that shaped our understanding of the function(s) of intracellular glycosylation (O-GlcNAc).

Critical observations that shaped our understanding of the function(s) of intracellular glycosylation (O-GlcNAc).
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批判性观察塑造了我们对细胞内糖基化功能(O-GLCNAC)功能的理解。

DOI:
10.1002/1873-3468.13286
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发表时间:
2018-12
期刊:
影响因子:
3.5
通讯作者:
Zachara NE
Zachara NE
中科院分区:
生物学3区
文献类型:
--
作者:
Zachara NE

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在首次描述与碳水化合物结合的蛋白质(粘蛋白)后近100年,一些研究表明糖蛋白并不局限于血清,细胞外基质,细胞表面或内膜系统。在20世纪80年代,出现了关键数据,表明细胞内蛋白质被O-连接的β-N-乙酰葡糖胺(O-GlcNAc)的单糖修饰。随后,在数千种调节细胞过程的蛋白质上鉴定出这种修饰,这些过程如蛋白质聚集、定位、翻译后修饰、活性和相互作用等多种多样。在这篇综述中,我们将重点介绍一些重要发现,这些发现塑造了我们对O-GlcNAc对蛋白质功能影响的分子事件的理解,O-GlcNAc在维持细胞内稳态中的作用,以及我们对调节O-GlcNAc循环机制的理解。
Almost 100 years after the first descriptions of proteins conjugated to carbohydrates (mucins), several studies suggested that glycoproteins were not restricted to the serum, extracellular matrix, cell surface, or endomembrane system. In the 1980’s, key data emerged demonstrating that intracellular proteins were modified by monosaccharides of O-linked β-N-acetylglucosamine (O-GlcNAc). Subsequently, this modification was identified on thousands of proteins that regulate cellular processes as diverse as protein aggregation, localization, post-translational modifications, activity, and interactions. In this Review, we will highlight critical discoveries that shaped our understanding of the molecular events underpinning the impact of O-GlcNAc on protein function, the role that O-GlcNAc plays in maintaining cellular homeostasis, and our understanding of the mechanisms that regulate O-GlcNAc-cycling.
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