乙尼中的脂酶结构稳定性对其在EGCG化反应中的催化活性的影响:FTIR和MD模拟
Shan Wang1, Ling Mo2, Beiqi Wu1
1State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
International journal of biological macromolecules
|November 20, 2023
概括
利波酶RM在乙二中显示了 (-) - 乙甲基-3-O-酸盐 (EGCG) 化过程中最高的转化率. 其优越的结构稳定性和灵活的活性部位使其非常适合合成EGCG衍生物.
科学领域:
- 生物催化剂是一种生物催化剂.
- 酵素工程是什么? 酶工程是什么
- 绿色化学 绿色化学
背景情况:
- (-) - 乙甲基-3-O-酸盐 (EGCG) 是一种强大的抗氧化剂,生物可用性有限.
- 化是提高EGCG稳定性和吸收的关键策略.
- 乙二是酶反应的常见溶剂,但脂酶稳定性可能是一个挑战.
研究的目的:
- 选和评估脂酶,以在乙尼中有效的EGCG化.
- 用FTIR和MD模拟来研究乙尼中的脂酶的结构稳定性.
- 为了确定有利于高EGCG转化率的脂酶特征.
主要方法:
- 使用四种不同的脂酶 (Novozym 435,Lipozyme RM,Lipozyme TLIM,Amano 30SD) 在乙基中对EGCG进行酶性化.
- 里埃转换红外光谱法 (FTIR) 分析脂酶的二次结构.
- 分子动力学 (MD) 模拟以评估脂酶的结构稳定性和活性部位的灵活性.
主要成果:
- 酶RM表现出最高的EGCG转化率,其次是酶TLIM.
- FTIR证实Lipozyme RM具有最稳定的二次结构.
- MD模拟显示,与Novozym 435和Amano 30SD相比,Lipozyme RM在氨酸中的整体结构稳定性优越.
结论:
- 脂酶的结构稳定性和活性部位的灵活性对于在酸中高效的EGCG化至关重要.
- 酶RM是EGCG化的一个有前途的生物催化剂,因为它具有稳定的结构和灵活的活性部位.
- 这项研究为选择合成EGCG和其他多衍生物的最佳脂酶提供了一个框架.
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