用于有效降解聚乙烯醇的s-oph酶:可溶性表达和催化性能
Xinyu Wang1, Jiaxuan Li1, Xiaoshan Lin1
1School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, 510006, China.
Molecular biology reports
|August 29, 2023
概括
研究人员确定并表达了s-oph基因,产生了一种高效的聚乙烯醇 (PVA) 降解酶. 这一发现为减轻水生环境中PVA污染提供了一个有希望的解决方案.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 酶学 是一种酶学.
背景情况:
- 聚乙醇 (PVA) 是一种广泛使用的具有宝贵性质的水溶性聚合物.
- 作为水生生态系统中一个重要的有机污染物,PVA对环境构成风险.
- 有效的微生物或酶降解PVA对于环境保护至关重要.
研究的目的:
- 克隆和表达编码PVA生物降解中的酶s-oph基因.
- 描述表达酶的活性和降解PVA的效率.
- 评估s-oph酶在环境应用中的潜力.
主要方法:
- 从Sphingopyxis sp.中克隆s-oph基因 M19.19.M19.M19.M19.M19.M19.M19.M19.M19.M19.M19.M19.M19.M
- 在大肠杆菌中使用分子伴侣的s-oph基因的可溶性表达.
- 净化s-oph酶并确定其催化活性.
- 在s-oph酶的存在下量化PVA降解效率.
主要成果:
- 该s-oph基因被成功克隆并表达在大肠杆菌中.
- 纯化的s-oph酶获得了16.8毫克L-1的产量,其催化活性为852.71U mg-1.1.
- 与对照组相比,s-oph酶反应系统中的PVA降解效率显著增加了233.5%.
结论:
- 在降解PVA时,s-oph酶表现出高效率,特异性和稳定性.
- 这种酶在应对塑料污染方面具有重要的实际应用潜力.
- 这些发现有助于制定PVA废物的环境修复策略.
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