V2EX o-glcnac

O-GlcNAc

定义 Definition

O-GlcNAc 指一种常见的蛋白质翻译后修饰:在蛋白质的丝氨酸(Ser)或苏氨酸(Thr)残基的羟基氧(O-)上,连接一个N-乙酰葡糖胺(GlcNAc)糖基。它是细胞内(尤其是细胞质、细胞核、线粒体)动态可逆的修饰,常与信号传导、代谢应激、基因表达调控等相关。(该词也可泛指这种修饰作用:O-GlcNAcylation。)

发音 Pronunciation

/o lk nk/

例句 Examples

O-GlcNAc is a sugar modification found on many proteins.
O-GlcNAc 是一种存在于许多蛋白质上的糖基修饰。

Changes in O-GlcNAc levels can alter cell signaling and are linked to diabetes and neurodegeneration.
O-GlcNAc 水平的变化会影响细胞信号传导,并与糖尿病及神经退行性疾病有关联。

词源 Etymology

O-GlcNAc 是科学缩写:O- 表示通过氧原子进行连接(O-linked);GlcNAcN-acetylglucosamine(N-乙酰葡糖胺) 的缩写(Glc=glucose/葡萄糖,NAc=N-acetyl/N-乙酰)。合起来表示“O-连接的N-乙酰葡糖胺”。

相关词 Related Words

文献作品 Literary Works

  • Essentials of Glycobiology(糖生物学经典教材,涵盖 O-GlcNAc 及其生物学作用)
  • Hart 等人在 CellNatureScience 等期刊上的综述与研究论文(O-GlcNAc 研究领域的代表性文献常出现该术语)
  • Annual Review of Biochemistry / Nature Reviews Molecular Cell Biology 等综述文章(常系统讨论 O-GlcNAc 与代谢、信号和疾病的关系)
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