来自Penicillium steckii的六个恩降解酶的重组生产和表征
Pedro H Damada1,2, Henriette J Rozeboom1, Marco W Fraaije1
1Molecular Enzymology Group, Institute of Biomolecular Sciences & Biotechnology, University of Groningen, Nijenborgh 3, 9747 AG, Groningen, the, Netherlands.
Chembiochem : a European journal of chemical biology
|March 12, 2025
概括
虫 (Penicillium steckii) 产生了六种用于生物催化剂的酶还原酶 (ERs). 这些真菌酶在各种基质上表现出活性,扩大化学合成的酶工具箱.
科学领域:
- 生物催化和酶工程 生物催化和酶工程
- 菌生物技术是一种真菌生物技术.
- 蛋白质结构和功能 蛋白质结构和功能
背景情况:
- 菌类是适应性的有机体,是生物催化剂新型酶的丰富来源.
- 恩降解酶 (ERs) 是减少α,β不和化合物的关键酶.
- 众所周知,Penicillium steckii可以产生二次代谢物,但其用于生物催化物的酶潜力较少被探索.
研究的目的:
- 为了研究Penicillium steckii作为一个恩-减少酶 (ERs) 的来源.
- 确定ERs的生物化学和结构性质的特征.
- 评估这些真菌ERs在生物催化应用中的潜力.
主要方法:
- 鉴定和克隆来自Penicillium steckii的11个编码ER的基因.
- 在大肠杆菌中,对六种活性恩降解酶 (PsOYE1-6) 的异质表达和净化.
- 酶活性测定,pH最佳值的确定,热稳定性分析和PsOYE2.2的X射线晶体学.
主要成果:
- 六个可溶性,含有FMN的酶还原酶 (PsOYE1-6) 已成功产生和净化.
- 序列分析将这些酶分类为OYE类II,III和V.
- 所有的酶都对p-基和马利米德表现出活性,具有不同的基质特异性,中度的热稳定性和6-7之间的pH最佳值. PsOYE2 的结构显示出一个稳定的二元体. 在R-卡转换中,PsOYE3,PsOYE4和PsOYE5显示了立体选择性.
结论:
- 虫 (Penicillium steckii) 是一个可行的来源,用于发现新的降解酶.
- 描述的PsOYEs为生物催化剂提供了多样化的酶工具箱.
- 为优化这些真菌酶在特定合成过程中的应用,需要量身定制的策略.
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