将转基因酶封装成In Vitro组装的蛋白质纳米分区 提高了热稳定性
Alexander Van de Steen1, Henry C Wilkinson1, Paul A Dalby1
1Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London WC1E 6BT, U.K.
ACS applied bio materials
|June 5, 2024
概括
囊素,即 prokaryotic 蛋白质,可以稳定像转基因酶这样的酶在它们的结构内. 这项研究开发了一种将货物装入这些蛋白质隔间的方法,增加了潜在应用的酶热稳定性.
科学领域:
- 生物化学和分子生物学
- 纳米技术和材料科学 材料科学
- 绿色化学和生物技术的发展
背景情况:
- 蛋白质区,特别是囊素,是有潜力在绿色化学和疗法中的 prokaryotic 纳米区.
- 封装剂可以自组装成透的子,提供表面显示和货物装载能力.
- 在这些蛋白质结构中封装货物的热效应尚不清楚.
研究的目的:
- 开发一种用于将记者蛋白加载到热稳定封装剂的方法.
- 调查封装剂加载对货物蛋白质稳定性,特别是热稳定性的影响.
- 探索 *in vitro* 组装的囊素在货物稳定方面的潜力.
主要方法:
- 使用超级文件绿色光蛋白进行的 *Thermotoga maritima* (T=1) 和 *Myxococcus xanthus* (T=3) 封装剂的 *in vitro* 重组和装载研究.
- 使用弗斯特共振能量转移 (FRET) 探头转基因酶作为一个工业相关的酶载荷.
- 将转基因基酶加载到*T.海事*封装剂中,并使用FRET标签分析热展开变化.
主要成果:
- 与M. xanthus*相比, *T. maritima* 封闭素体的重组产量更高.
- *在体外*加载有利于*M. xanthus*T=3囊体形式,而过载导致*T. maritima*T=1.1形.
- 在 *T. maritima* T=1 encapsulins 中封装转基因酶增加了酶的热稳定性.
结论:
- 开发了一种功能性方法,用于*in vitro*将货物蛋白加载到热稳定性封装剂中.
- 证明封装可以增强封装酶的热稳定性.
- 支持在货物稳定应用中使用*in vitro*组装的囊素进行结构,空间和功能控制.
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