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相关概念视频

Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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相关实验视频

Updated: Jul 12, 2025

Identifying the Binding Proteins of Small Ligands with the Differential Radial Capillary Action of Ligand Assay DRaCALA
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Identifying the Binding Proteins of Small Ligands with the Differential Radial Capillary Action of Ligand Assay DRaCALA

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准备用于蛋白质标签的重组"Split AEP"

Muge Ma1, Simon T M Tang1, Matthew T Dickerson1

  • 1School of Chemistry, Cardiff University, Park Place, Cardiff, United Kingdom.

Methods in enzymology
|October 20, 2023
PubMed
概括
此摘要是机器生成的。

一个新的,精简的协议显著简化了Oldenlandia affinis asparaginyl ligase (OaAEP1) 蛋白质标签工具的准备. 这种改进的方法将净化时间缩短到6小时以下,并增强酶活性和均性.

关键词:
亚斯巴拉基尼尔内化酶.亚斯巴拉基尼尔结合酶 (Asparaginyl ligase) 是一种火的副产品火.在OaAEPEP的OaAEP.酸绑定是一种

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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:

  • 奥尔登兰地亚亲属性亚斯巴拉基尼尔酶 (OaAEP1-C247A) 是蛋白质标签的宝贵工具.
  • 目前的制备方法是繁的,耗时的,并产生适度的纯度.

研究的目的:

  • 开发一种用于制备活性OaAEP的新型,高效的协议1.
  • 提高酶的同质性和催化活性.

主要方法:

  • 作为单独的实体,制造上限和核心领域.
  • 使用固定金属亲和色谱 (IMAC) 和尺寸排除色谱 (SEC) 进行净化.
  • 引入D29E突变以防止自我分裂.

主要成果:

  • 净化时间从2天缩短到6小时以下.
  • 通过"分裂AEP" (OaAEP1-D29E/C247A) 实现了更高的同质性和活性.
  • 表明催化效率 (kcat/KM) 增加了约3倍.

结论:

  • 新的协议提供了一种显著改进的方法,用于准备OaAEP1用于蛋白质标签.
  • 修改后的酶表现出用于生物技术应用的增强性质.
  • 一个结合的酶和化学转化协议使得蛋白质的标签效率高.