解读植物化学物质与Saccharomyces cerevisiae中酒精脱酶1 (ADH1) 的相互作用:一个分子模拟研究
Umesh1, Vijayanand Suryakant Moholkar1,2
1School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
Preparative biochemistry & biotechnology
|January 29, 2026
概括
甘包油中的植物化学物质与Saccharomyces cerevisiae中的酒精脱酶1 (ADH1) 结合,阻碍了乙醇发酵. 这项研究使用了分子模拟来识别关键的抑制化合物及其结合机制.
科学领域:
- 生物化学 生物化学
- 生物技术是生物技术.
- 分子生物学分子生物学
背景情况:
- 甘包 (SCB) 含有植物化学物质,可以通过影响关键酶来干扰乙醇发酵.
- 在Saccharomyces cerevisiae中的酒精脱酶1 (ADH1) 对于乙醇生产至关重要,它催化了乙酸的减少.
- 了解植物化学酶相互作用对于优化发酵过程和产量至关重要.
研究的目的:
- 研究SCB植物化学物质和来自Saccharomyces cerevisiae的ADH1酶之间的相互作用.
- 为了确定SCB中的特定植物化学物质,这些植物化学物质对ADH1活性表现出抑制作用.
- 通过分子模拟,阐明这些植物化学酶复合物的结合机制和稳定性.
主要方法:
- 在SCB中的植物化学物质使用液体染色学-电子喷射电离-质谱/四极飞行时间 (LC-ESI-MS/QTOF) 分析来确定.
- 使用分子对接模拟来评估已识别的植物化学物质与ADH1酶的结合亲和力.
- 进行了分子动力学模拟,以评估酶-植物化学复合物的稳定性和构造变化.
主要成果:
- 四种SCB植物化学物质 - - 基酸,阿皮基宁,迪奥斯梅丁和咖啡酸 - - 对ADH1表现出高的结合亲和力,低的结合能和抑制常数表明了这一点.
- 与ADH1形成稳定的复合物,如与阿波蛋白相比,显著较低的根平均平方偏差 (RMSD) 值证明.
- 当ADH1的活性部位残留物与酸和原蛋白结合时,其波动减少 (下根平均平方波动 - RMSF),这表明有效抑制.
结论:
- 甘中存在的植物化学物质,特别是酸和阿皮根因,可以显著阻碍Saccharomyces cerevisiae的代谢途径.
- 这些植物化学物质通过与ADH1酶的优先结合来发挥其抑制作用,影响乙醇发酵动力学和产量.
- 这些发现强调了考虑生物质原料中的植物化学成分对于优化工业发酵过程的重要性.
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