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尼古丁胺胺辅因子生物仿真学的实验和计算评估

Karissa C Kenney¹, Tyler P LaFortune¹, Sourav Majumdar¹

¹Department of Chemistry, University of California, Irvine, 1102 Natural Sciences 2, Irvine, California 92697-2025, United States.

ACS chemical biology

|June 9, 2025

概括

合成尼古丁胺胺辅因子仿生学 (NCBs) 提供了增强的生物催化剂. 优化链接器长度和环2替代剂可以提高氧化还原活性和稳定性,指导未来的NCB设计.

科学领域:

生物催化和酶工程生物催化和酶工程
合成化学和生物仿真设计

背景情况:

氧化降解酶酶是有价值的生物催化剂,需要尼古丁胺胺辅因子 (NAD).
合成尼古丁胺胺辅助因子生物模拟 (NCBs) 旨在克服自然辅助因子的局限性,提供可调节的特性.
了解结构-活动关系 (SARs) 对于合理的NCB设计和创新至关重要.

研究的目的:

系统地调查链条长度和aryl环替代对NCB业绩的影响.
阐明管理NCB稳定性,氧化还原潜力和催化活性的基本机制.
建立设计原则,以创建具有定制属性的改进的国家央行.

主要方法:

新型NCB类型的合成和特征,具有不同的链接长度和环2替代物.
电化学分析以确定氧化还原潜力和稳定性.
使用氧化降解酶的酶催化试验来评估NCB活性和酶兼容性.
计算建模,包括密度函数理论 (DFT),以了解SAR和反应机制.

主要成果:

连接器的长度显著影响了氧化还原活性,两和三碳连接器显示最佳性能.
在未结合的基 (环2) 上的电子捐赠替代物大大提高了还原潜力.
在催化转化过程中观察到酶依赖的耐受性和对NCB结构的敏感性.
计算研究揭示了环2和尼古丁胺胺部分之间的稳定相互作用 (π-π堆叠,电荷转移).

结论:

系统的SAR研究为NCB设计增强生物催化剂提供了关键的见解.
定制连接器长度和环2替代剂可以微调NCB氧化还原特性.
这些发现有助于合理设计下一代NCB用于各种酶应用.

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