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来自Thermococcus stetteri的B家族DNA聚合酶的表征和PCR应用

Aleksandra A Kuznetsova¹, Marina A Soloveva^1,2, Elena S Mikushina¹

¹Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630090, Russia.

Life (Basel, Switzerland)

|January 8, 2025

概括

来自Thermococcus stetteri的新型DNA聚合酶TstP36H-Sso7d在PCR放大中表现出卓越的性能,实现更长的DNA片段和更快的延伸时间. 与现有的聚合酶相比,这种酶表现出更高的保真性和效率,使其成为分子生物学应用的有希望的工具.

科学领域:

生物化学生物化学
分子生物学分子生物学
酶学是一种酶学.

背景情况:

超热友的考古DNA聚合酶由于热稳定性和校对性,对PCR有价值.
来自Thermococcus stetteri的Tst DNA聚合酶以前没有被表征.

研究的目的:

为了净化和描述来自Thermococcus stetteri的Tst DNA聚合酶.
评估野生型Tst(wt) 和仿真TstP36H-Sso7dDNA聚合酶在DNA放大中的性能.

主要方法:

纯化野生类型的Tst(wt) 和仿制的TstP36H-Sso7d DNA聚合酶.
生物化学表征包括DNA放大试验和稳定状态运动分析.
对TstP36H-Sso7d与PCR效率和精度的PfuV93Q-Sso7d进行比较.

主要成果:

Tst(wt) 增强的DNA片段高达6kB; TstP36H-Sso7d增强的片段高达15kB.
与PfuV93Q-Sso7d相比,TstP36H-Sso7d的PCR效率显著更高,延伸率更快 (kcat).
TstP36H-Sso7d表现出更高的保真度,在高达56°C的温度下没有观察到不正确的dNTP结合.

结论:

仿真TstP36H-Sso7dDNA聚合酶显示了增强的DNA放大能力.
与通常使用的PCR酶相比,TstP36H-Sso7d提供了更高的效率和保真性.
TstP36H-Sso7d是高保真度DNA放大应用的强有力的候选.

关键词:

这是一个PCRPCR.热球菌 (Thermococcus stetteri) 是一种菌.酶活性的酶活动.家庭 B 家庭 B.聚变 DNA 聚合酶突变发生的突变发生.原生酶原生酶是一种原生酶.

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