V2EX cullin

Cullin

释义 Definition

Cullin(库林蛋白)是一类真核细胞中的支架蛋白,常作为Cullin-RING 型 E3 泛素连接酶(CRL)复合体的核心骨架,帮助把底物蛋白“递交”给泛素化系统,从而调控蛋白降解、细胞周期、信号转导等过程。(不同成员如 CUL1、CUL2、CUL3、CUL4A/4B、CUL5、CUL7 等功能与搭配的底物适配体不同。)

发音 Pronunciation

/kln/

例句 Examples

Cullin proteins help cells control which proteins get destroyed.
库林蛋白帮助细胞控制哪些蛋白质会被降解。

Mutations affecting a cullin-based E3 ligase can disrupt protein turnover and contribute to disease.
影响以库林为核心的 E3 连接酶的突变可能扰乱蛋白质周转,并导致疾病发生。

词源 Etymology

Cullin 是分子生物学中对一类蛋白家族的命名,源于早期遗传学研究中对相关基因/蛋白的系统编号与家族归类(如 CUL1 等)。后来发现这些蛋白在结构与功能上高度一致,普遍充当 E3 泛素连接酶复合体的“骨架”,因此形成了“cullin(库林蛋白)家族”的通用名称。

相关词 Related Words

文献与著作 Notable Works

  • Molecular Biology of the Cell(Alberts 等)中关于泛素-蛋白酶体系统与 Cullin-RING ligases (CRLs) 的章节
  • The Cell: A Molecular Approach(Cooper & Hausman)对 CRL 复合体(含 cullin)的介绍
  • 期刊论文中高频出现:Nature、Science、Cell 等关于 CRL、neddylation、蛋白质降解通路 的研究文章
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