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在大肠杆菌表达系统中,从Moloney小鼠白血病病毒产生逆转录酶
Yudhi Nugraha1, Fina Amreta Laksmi2, Isa Nuryana2
1Research Center for Molecular Biology Eijkman, National Research and Innovation Agency, Cibinong, Bogor, West Java, Indonesia.
Preparative biochemistry & biotechnology
|February 27, 2024
概括
我们开发了一种具有成本效益的方法,用于使用自诱导产生Moloney小鼠白血病病毒 (M-MLV) 逆转录酶 (RT). 这种优化的工艺可显著提高工业应用的M-MLV RT产量和活性.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 酶学 是一种酶学.
背景情况:
- 反转录酶 (RT) 对于分子生物学技术至关重要,如RT-PCR,将RNA转化为cDNA.
- 对RT的高需求需要优化,成本效益高的工业生产方法.
- 目前在大肠杆菌中使用T7促进剂和IPTG进行重组RT生产并不具有成本效益.
研究的目的:
- 开发一种替代的,成本效益高的生产策略,用于莫洛尼小鼠白血病病毒 (M-MLV) 逆转录酶 (RT).
- 为了优化M-MLV RT表达,在化学定义的介质中使用自诱导方法.
- 为了提高M-MLV RT产量和活动的工业适用性.
主要方法:
- 在化学定义的介质中利用自诱导方法对M-MLV RT表达.
- 采用响应表面方法 (RSM) 来优化碳源成分 (葡萄糖,乳糖,甘油).
- 净化了M-MLV RT,并描述了其特定活动.
主要成果:
- 实现了32.8 mg/L的净化M-MLV RT.的产量.
- 优化的碳源度为0.06%的葡萄糖,0.9%的甘油和0.5%的乳糖.
- 获得了蛋白质产量的3.9倍提高和7462.50U/mg的特异活性,表明活性酶的生产.
结论:
- 成功建立了一个具有成本效益的,小规模的M-MLV RT生产程序.
- 在化学定义的介质中的自诱导方法为M-MLV RT提供了一个可用于工业的战略.
- 优化的碳源成分显著提高了M-MLV RT产量,并保持了酶活性.
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