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T7 RNA 聚合酶热稳定性的贪婪累积定向进化及其高温转录性能提升研究
T7 RNA 聚合酶(T7 RNAP)催化的体外转录(IVT)是治疗性 mRNA 大规模生产的金标准,但该酶催化会伴随产生双链 RNA(dsRNA)等有害杂质。研究人员通过 PROSS 服务器预测热稳定突变位点,经单点评估及多位点组合突变的贪婪累积优化,获得热稳定变体 M10(Tm:49.5°C ...
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