在冷复合酶聚合酶放大中获得了前所未有的稳定性,使用来自Thermotoga海洋的热稳定型酸盐激酶
Kevin Maafu Juma1, Yuto Murakami2, Kenta Morimoto1
1Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
Journal of bioscience and bioengineering
|May 8, 2024
概括
软化复合酶聚合酶放大 (RPA) 试剂从热稳定酶中受益. 热稳定型酸盐激酶 (Tma-PK) 改善了冷化RPA的性能,这表明热稳定组件可以提高试剂的稳定性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 重组酶聚合酶放大 (RPA) 是一种异热DNA放大方法.
- 在现场应用需要稳定,冷化RPA试剂.
- 目前的RPA配方经常使用中性酶,限制试剂的稳定性.
研究的目的:
- 调查Thermotoga maritima中热稳性酸盐激酶 (Tma-PK) 在RPA中作为ATP再生酶的使用.
- 评估Tma-PK对液体和冷化RPA试剂性能的影响.
- 为了确定热稳性酶是否更适合冷化RPA试剂配方.
主要方法:
- 从Thermotoga maritima中分离和净化了Tma-PK.
- 在大肠杆菌中表达的Tma-PK.
- 与人类PK相比,评估了Tma-PK的热稳定性.
- 在液体和冷化RPA配方中加入Tma-PK.
- 将RPA试剂与Tma-PK的性能与人类PK进行了比较.
主要成果:
- Tma-PK显示出比人类PK更高的热稳定性.
- 含有Tma-PK的液体RPA试剂的性能与人类PK的试剂相当.
- 与Tma-PK配制的冷化RPA试剂显示出增强的性能.
- 热稳定酶被认为对冷化RPA优越.
结论:
- 来自Thermotoga maritima的热稳性pyruvate kinase是一种可行的ATP再生酶,用于RPA.
- 在RPA配方中使用热稳定酶,如Tma-PK,可以提高冷化试剂的稳定性和性能.
- 热稳定酶是开发强大,持久的冷解RPA套件的首选组件.
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