V2EX glycan

Glycan

定义 Definition

n. 生物化学和糖生物学术语,指由多个单糖通过糖苷键连接形成的糖链或糖类结构,中文常译为“聚糖”。聚糖可以是线状或分支状,也可以游离存在,或连接在蛋白质、脂质等分子上形成糖蛋白、糖脂等。它们常出现在细胞表面、细胞外基质和分泌蛋白中,参与细胞识别、信号传递、免疫反应和蛋白质稳定性等过程。

发音 Pronunciation

/lakn/

例句 Examples

The cell surface is covered with many glycans.
细胞表面覆盖着许多聚糖。

Researchers compared the glycan structures on the antibody to understand how they might influence immune activity.
研究人员比较了抗体上的聚糖结构,以了解它们可能如何影响免疫活性。

词源 Etymology

来自表示“糖、甜”的词根 **glyc-**,源于希腊语 glykys,意为“甜的”。后缀 -an 常用于化学名词中,因此 glycan 在生物化学中逐渐用来指糖链或糖类聚合结构。

相关词 Related Words

文学作品用例 Literary Usage

  • 在糖生物学教材如 Essentials of Glycobiology 中,glycan 常用于描述蛋白质或脂质上的糖链结构及其生物功能。
  • 在糖组学和免疫学研究论文中,glycan 常用于讨论细胞表面识别、抗体糖基化和病原体与宿主细胞相互作用。
  • 在生物化学和分子生物学专业写作中,该词常出现在 glycan structure、glycan biosynthesis、glycan recognition 等表达中。
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