使用Vibrio natriegens用于高产量生产具有挑战性的表达目标和蛋白质代
Natalia Mojica1, Flore Kersten1,2, Mateu Montserrat-Canals1,2
1Department of Chemistry, University of Oslo, NO-0315 Blindern, Oslo, Norway.
Biochemistry
|February 15, 2024
概括
维布里奥纳特里根斯Vmax X2有效地产生毫克数量的具有挑战性的可溶性蛋白质,并促进蛋白质化,在结构生物学应用中表现优于埃舍里希亚大肠杆菌.
科学领域:
- 生物技术和蛋白质表达
- 结构生物学是结构生物学.
背景情况:
- 毫克级的可溶性蛋白质生产对于结构和功能研究至关重要,但对于传统的表达系统来说具有挑战性.
- 大肠杆菌 (Escherichia coli) 是一种常见的表达宿主,它经常难以以足够的量产生某些可溶性蛋白质.
研究的目的:
- 评估Vibrio natriegens的Vmax X2菌株作为具有挑战性的可溶性蛋白质高产量生产的新型宿主.
- 评估Vmax X2对于高级结构生物学技术所需的蛋白质丧失化的适用性.
主要方法:
- 使用商业Vibrio natriegens菌株 (Vmax X2) 进行蛋白质表达.
- 生产的细菌和真菌蛋白质,包括霍乱毒素 (CT),GbpA,耐热性肠毒素 (LT) 和CCTX2.
- 使用化最小介质和氧化进行了蛋白质化试验.
主要成果:
- Vmax X2成功地产生了毫克数量的可溶性蛋白质,这些蛋白质在大肠杆菌中难以表达.
- 从生长介质中恢复分泌蛋白质 (CT,GbpA,LT),简化净化并增加产量 (比大肠杆菌高6至26倍).
- 与大肠杆菌相比,实现了蛋白质化产量的3倍增长,证明了效率和成本效益.
结论:
- 振动性天然基Vmax X2是一种非常有前途的宿主,可以在适合结构生物学的数量中产生具有挑战性的可溶性蛋白质.
- 维马克X2系统为蛋白质输提供了显著的优势,这是NMR光谱等技术的关键步骤.
- 这种新的表达平台扩大了研究人员需要大量难以表达或同位素标记蛋白质的工具包.
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