V2EX nglycan

N-glycan

Definition / 释义

N-糖链(N-连接型糖链):一种通过天冬酰胺(Asn)残基上的氮原子(N)与蛋白质相连的寡糖/多糖结构,常见于糖蛋白中,影响蛋白质折叠、稳定性、细胞识别与免疫反应等。(另有 O-glycan 等其他连接方式。)

Pronunciation / 发音(IPA)

/nlakn/

Examples / 例句

N-glycans help many proteins fold correctly in the endoplasmic reticulum.
N-糖链帮助许多蛋白质在内质网中正确折叠。

Changes in N-glycan branching can alter how cancer cells interact with the immune system and surrounding tissues.
N-糖链分支结构的变化会影响癌细胞与免疫系统及周围组织的相互作用方式。

Etymology / 词源

N-glycan 由两部分构成:N- 表示“与氮(N)相关/通过氮连接”,在生物化学语境中特指糖链连接到天冬酰胺(Asn)侧链中的氮glycan 源自希腊语词根 **glyk-**(与“甜”相关),现代科学英语中用于指“糖链/聚糖”这类由单糖组成的链状或分支结构。

Related Words / 相关词汇

Literary Works / 文献与著作中的用例

  • Essentials of Glycobiology(Varki 等编著):系统介绍 N-糖链的结构类型(如高甘露糖型、复杂型、杂合型)及其生物学功能。
  • Molecular Biology of the Cell(Alberts 等):在分泌途径与蛋白质加工章节中讨论糖基化与 N-连接型糖链加工。
  • Glycobiology(学术期刊):大量研究论文直接使用 “N-glycan(s)” 讨论糖链结构解析、疾病标志物与免疫调控等主题。
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