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克服研究-核酸辅因子相关酶的障碍

Jorge L Nevarez¹, Aiko Turmo², Santhosh Gatreddi²

¹Department of Chemistry, Michigan State University, East Lansing, Michigan, USA.

|December 16, 2024

概括

研究人员开发了一种新的方法来生产和测试使用-核酸 (NPN) 辅因子的酶. 该系统允许创建含有NPN的活性酶和循环二元化试验来研究它们的功能.

科学领域:

生物化学和酶学生物化学和酶学
微生物学微生物学
生物有机化学生物有机化学

背景情况:

核酸 (NPN) 辅因子对于特定的赛马酶和表皮酶酶是必不可少的.
由于生产活性形式和检测其活性存在困难,研究这些酶具有挑战性.
LarB,LarC和LarE蛋白质参与NPN合成,并将其纳入LarA同类物.

研究的目的:

建立一个强大的系统,以异质地生产含有酶的活性NPN辅因子.
开发一种用于监测这些酶的活性的多功能试验.
扩大分析NPN依赖酶和理解其生物化学作用的能力.

主要方法:

利用大肠杆菌中的Duet表达系统来克隆和表达Lactiplantibacillus plantarumlar*基因.
通过将 *L. plantarum larA* 基因替换为来自其他微生物的同类基因,生成活跃的 LarA 同类基因.
采用循环二元化 (CD) 光谱法进行酶活性测定,监测基质的反体/体转化.

主要成果:

成功地将乳酸种族酶活性赋予表达L. plantarum lar*基因的大肠杆菌细胞.
证明了使用Duet系统从各种微生物中生成活跃的LarA同类.
已建立的CD光谱作为一种广泛适用的方法,用于检测含有NPN辅因子的酶,而无合试剂.

结论:

杜埃特表达系统提供了一个多功能平台,用于生产含有大肠杆菌*中的酶的活性NPN辅因子.
循环二重化谱法提供了一种高效且无试剂的方法,用于测试LarA同类的活性.
这些进展加强了对NPN依赖酶的研究,加深了我们对微生物代谢和有机金属化学的理解.

关键词:

循环二重化谱光学循环二重化谱光学一个辅助因素.经皮酶酶是什么意思尼克尔尼克尔是什么意思这是一场赛车狂欢,赛车狂欢.

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