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Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
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酵母表面显示的蛋白质工程

Charlotte U Zajc1, Elise Sylvander2, Magdalena Teufl3

  • 1Department of Chemistry, Institute of Biochemistry, BOKU University; CD Laboratory for Next Generation CAR T Cells; charlotte.zajc@boku.ac.at.

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概括

酵母表面显示是一个多功能蛋白质工程工具. 这种方法将蛋白质功能与其遗传密码联系起来,使得能够选择和丰富具有增强结合能力的改进蛋白质变体.

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科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 蛋白质工程是指蛋白质工程.

背景情况:

  • 蛋白质工程增强现有的蛋白质功能或创造新的蛋白质功能.
  • 酵母表面显示是一种关键的蛋白质工程技术,在酵母表面表达随机蛋白质.
  • 它将蛋白质表型 (例如,抗原结合) 与基因型 (编码等离子体) 联系起来进行选择.

研究的目的:

  • 为酵母表面显示选择活动提供全面的协议.
  • 证明该方法可用于选择具有增强抗原结合的蛋白质变体的适用性.
  • 展示典型的结果,并建立该技术的稳定性.

主要方法:

  • 使用酵母表面显示来表达不同的蛋白质库.
  • 采用磁珠选择和流式细胞计分类来进行丰富.
  • 将表型 (结合) 与基因型 (等离子体) 联系起来,用于变体选择.

主要成果:

  • 成功选择和丰富蛋白质变体,增强目标抗原结合.
  • 证明即使没有初始亲和力,也可以实现目标结合.
  • 一个逐步的协议的介绍,用说明性的例子.

结论:

  • 酵母表面显示是一种广泛适用的和强大的蛋白质工程方法.
  • 该协议适用于任何具有流细胞计的分子生物学实验室.
  • 这种技术促进了亲和力成熟和新的结合生成.