用于生物催化剂的共沉积酶封装的共价有机框架
Satyadip Paul1, Mani Gupta2, Shayan Karak1
1Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohanpur, Kolkata 741246, India.
Journal of the American Chemical Society
|June 27, 2025
概括
我们开发了一种单合成方法, 将酶封装在共价有机框架 (COF) 中, 提高它们的稳定性和可重复使用性. 这种方法在恶劣条件下提高了酶性能,使生物催化剂的应用范围更广.
科学领域:
- 生物催化
- 材料科学
- 纳米技术
背景情况:
- 酶是有效的生物催化剂,但在恶劣的工业条件下表现出有限的稳定性.
- 开发强大的酶固定化策略对于扩大其实际应用至关重要.
- 由于它们的可调结构和高表面积,共价有机框架 (COF) 为生物分子封装提供了一个有前途的平台.
研究的目的:
- 开发一种易于用酶封装的COF的水性合成方法.
- 研究封装酶和COF矩阵之间的相互作用.
- 评估封装酶的增强稳定性和可重复使用性.
主要方法:
- 包括β-葡萄糖酶 (BGL) 和性酸酶 (ALP) 在内的各种酶封装的TpAzo COFs的单水合成.
- 固态2DNMR相关光谱检测分子水平的酶-COF相互作用.
- 散射式扫描近场光学显微镜 (s-SNOM) 和纳米级里埃变换红外光谱 (nanoFTIR) 用于验证.
- 用于测量酶活性,在变质条件下的稳定性 (SDS) 和可回收性.
主要成果:
- 在TpAzo COF中成功封装多种酶和蛋白质.
- 直接证实了酶与COF骨干之间的分子相互作用,证实了结构完整性.
- 封装的BGL和ALP保持了高的催化活性,并且可回收使用长达10个循环.
- 在1-15%的SDS溶液中,COF封装显著提高了BGL的稳定性,减轻了变性.
结论:
- 为酶-COF复合物建立了一个强大的单水合成策略.
- 酶-COF相互作用是提高酶稳定性和可重复使用性的关键.
- 这种方法提供了一种可行的方法,用于制造稳定,可重复使用的生物催化剂.
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