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首页> 外文期刊>The FEBS journal >Novel strategy for protein production using a peptide tag derived from Bacillus thuringiensis Cry4Aa
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Novel strategy for protein production using a peptide tag derived from Bacillus thuringiensis Cry4Aa

机译:使用苏云金芽孢杆菌Cry4Aa衍生肽标签生产蛋白质的新策略

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摘要

Numerous proteins cannot be sufficiently prepared by ordinary recombinant DNA techniques because they are unstable or have deleterious effects on the host cell. One idea to prepare such proteins is to produce them as protein inclusions. Here we developed a novel system to effectively prepare proteins by using peptide tags derived from the insecticidal Cry toxin of a soil bacterium, Bacillus thuringiensis. Fusion with this peptide tag, designated 4AaCter, facilitates the formation of protein inclusions of glutathione S-transferase in Escherichia coli without losing the enzyme activity. Application of 4AaCter to the production of syphilis antigens TpN15, TpN17 and TpN47 from Treponema pallidum yielded excellent results, including a dramatic increase in the production level, simplification of the product purification and high reactivity with syphilis antibody. The use of 4AaCter may provide an innovational strategy for the efficient production of proteins.
机译:许多蛋白质不能通过常规重组DNA技术充分制备,因为它们不稳定或对宿主细胞具有有害作用。制备此类蛋白质的一种方法是将其作为蛋白质包裹体生产。在这里,我们开发了一种新型系统,可通过使用源自土壤细菌苏云金芽孢杆菌的杀虫性Cry毒素的肽标签有效地制备蛋白质。与该肽标签(称为4AaCter)的融合,可在大肠杆菌中促进谷胱甘肽S-转移酶的蛋白质包裹体的形成,而不会损失酶的活性。将4AaCter应用于梅毒螺旋体生产梅毒抗原TpN15,TpN17和TpN47产生了极好的结果,包括生产水平的显着提高,产品纯化的简化以及与梅毒抗体的高反应性。 4AaCter的使用可以为有效生产蛋白质提供创新的策略。

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