通过结合核心外纳米光子反应器和原生酶实现有氧光生物催化
Wenxin Wei1, Francesca Mazzotta1, Ingo Lieberwirth1
1Max Planck institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Journal of the American Chemical Society
|April 1, 2022
概括
这项研究引入了用于稳定生物催化物的新型核心外纳米反应器. 这些纳米反应器保护酶免受反应性氧物种的影响,使得有效的辅助因子再生和合成化学的长期使用成为可能.
科学领域:
- 生物催化和合成化学
- 纳米技术和材料科学
背景情况:
- 酶催化在温和条件下提供选择性.
- 由于由反应性氧物种降解酶,将酶与光催化剂相结合是具有挑战性的.
- 有效的辅助因子再生对于生物催化过程至关重要.
研究的目的:
- 设计一个稳定的可回收的光生物催化系统.
- 保护酶免受光生成的反应性氧物种的影响.
- 为了使酶反应有效的辅因子再生.
主要方法:
- 开发具有核心外结构的多孔纳米光子反应器.
- 使用光活性有机芯进行辅因子再生 (NAD+从NADH).
- 使用非光活性外捕获和禁用活性氧物种.
- 用糖醇脱酶和葡萄糖1-脱酶酶系统进行演示.
主要成果:
- 核心外纳米反应器在有氧条件下表现出高稳定性.
- 通过光活性核实现了酶辅因子NAD+的有效再生.
- 光生成的反应性氧物被有效地捕获和失活,防止酶变性.
- 与光催化系统一起观察到长期的酶稳定性.
结论:
- 核心外结构的纳米光子反应器为稳定和可回收的光生物催化剂提供了强大的平台.
- 这种方法克服了联合光催化酶系统中的酶降解的局限性.
- 这些纳米反应器促进了有效的辅助因子再生,提高了合成化学中的生物催化剂的效用.
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