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Updated: Jul 18, 2025

Cell-free Protein Expression Using the Rapidly Growing Bacterium Vibrio natriegens

Cell-free Protein Expression Using the Rapidly Growing Bacterium Vibrio natriegens

Published on: March 14, 2019

[在Vibrio natriegens中,用于细胞外生产pullulanase的分泌表达和发酵优化]

Yuhua Zhang¹, Xuguo Duan¹

¹College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.

Sheng wu gong cheng xue bao = Chinese journal of biotechnology

|August 25, 2023

概括

维布里奥纳特里基因成功地分泌了大拉酶 (PulA) 和一个突变体 (PulN2). 这种新型宿主提供比大肠杆菌更高的酶活性,有助于大蛋白质表达.

科学领域:

生物技术是生物技术.
酶工程是什么? 酶工程是什么?
微生物蛋白的表达方式

背景情况:

氨酶是一种粉脱枝酶,由于其较大的分子量,在分泌表达方面存在挑战.
维布里奥纳特里根被认为是有效的蛋白质合成的有前途的表达宿主.

研究的目的:

为了实现Vibrio natriegens中全长的pullulanase (PulA) 和一个截断的突变体 (PulN2) 的分泌表达.
为了优化分泌表达条件,包括信号,温度和诱导剂度.
为了比较PulA和PulN2在V. natriegens和E. coli中产生的细胞外酶活动.

主要方法:

在Vibrio natriegens VnDX菌株中,PulA和PulN2的分泌表达.
优化发酵参数:信号,温度,诱导剂度,甘氨酸度和发酵时间.
在V. natriegens VnDX和E. coli BL21(DE3) 主体之间对细胞外酶活性进行比较分析.

主要成果:

在V. natriegens VnDX.中成功分泌全长PulA和PulN2的表达.
优化的条件产生了高的细胞外酶活性:PulA为61.6 U/mL,PulN2.2为64.3 U/mL.
与大肠杆菌BL21(DE3) 相比,V. natriegens VnDX对PulA表现出110%的活性,对PulN2表现出62%的活性.

结论:

振动性原体VnDX是一种有效的宿主,用于分泌大分子量蛋白质如pullulanase的表达.
这些发现为使用V. natriegens.表达其他大型蛋白质提供了有价值的参考.
这项研究强调了V. natriegens作为工业酶生产的优质宿主的潜力.

关键词:

维布里奥纳特里根斯 (Vibrio natriegens) 是一种天然物质.发酵优化优化发酵的优化拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉秘密表达的表达方式

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