在Pichia pastoris上显示来自Lactobacillus paracasei的阿斯巴酸氨酶的表面显示
Chen-Chi Chang1, Yi-Hao Huang2, Hua-Kun Fu2
1Department of Laboratory Medicine, Taipei City Hospital Heping Fuyou Branch, Taipei, 100027, Taiwan.
World journal of microbiology & biotechnology
|April 15, 2025
概括
在Pichia pastoris上表面显示Lactobacillus paracasei酸氨酶 (LpAAL),提高了酶的稳定性和可重复使用性. 这种工程酵母酶 (yLpAAL) 对工业应用具有前景,在具有挑战性的条件下需要强大的生物催化剂.
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?
- 微生物表面显示器
背景情况:
- 乳酸细菌 paracasei 酸氨酶 (LpAAL) 是一种具有工业应用的多功能酶.
- 酶稳定性和可重复使用性是工业酶过程的关键因素.
- 表面显示技术提供了一种改善酶特性的方法.
研究的目的:
- 为了探索LpAAL在Pichia pastoris上的表面显示,使用糖酸氨基醇 (GPI) 定.
- 评估表面显示酶 (yLpAAL) 的稳定性,动力学和可重复使用性.
- 评估yLpAAL在工业应用中的潜力.
主要方法:
- 在Pichia pastoris上通过GPI anchoring显示LpAAL的表面显示.
- 在高温和性条件下yLpAAL稳定性的表征.
- 动力分析 (Km) 和存储稳定性和可重复使用性的评估.
主要成果:
- 表面显示的LpAAL (yLpAAL) 在高温和性pH下表现出增强的稳定性.
- 动力分析显示,与自由LpAAL (5.9 mM) 相比,yLpAAL (6.3 mM) 的Km略有增加,但对效率没有显著影响.
- yLpAAL表现出更好的储存稳定性,并在六个重复使用周期后保持了超过85%的活性.
结论:
- 表面显示技术,使用GPI在Pichia pastoris中的定,成功地提高了LpAAL的性能.
- yLpAAL提供了更好的稳定性和可重复使用性,使其适用于苛刻的工业环境.
- 该战略为开发各种行业的耐用和高效酶提供了一个有前途的方法.
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