基于机制的抑制剂和基于活动的探针的合理设计,用于识别保留α-l-阿拉比诺酸酶
Nicholas G S McGregor1, Marta Artola2, Alba Nin-Hill3
1York Structural Biology Laboratory, Department of Chemistry, The University of York, Heslington, York YO10 5DD, U.K.
Journal of the American Chemical Society
|February 14, 2020
概括
研究人员开发了基于活动的新型探测器,以识别和描述生物质降解中的关键酶α-L-氨酸酶. 这种工具有助于理解复杂的碳水化合物系统和发现新的酶.
科学领域:
- 生物化学
- 酵素学
- 碳水化合物化学
背景情况:
- 在复杂的生物质降解系统中识别酶是具有挑战性的.
- 阿尔法-L-氨酸酶是分支的关键.
- 需要选择性检测这些酶的方法.
研究的目的:
- 设计和合成对alpha-L-arabinofuranosidases的共价抑制剂和基于活性的探针.
- 分析抑制剂的自由能量结构.
- 开发一种在真菌分泌物中识别这些酶的方法.
主要方法:
- 基于alpha-L-arabinofuranosides的共价抑制剂的合理设计
- 通过Wittig-Still重组进行合成.
- 动力测量,质谱和结构实验.
- 基于阿齐里丁的探针应用于真菌分泌物.
主要成果:
- 设计的抑制剂有效标记了GH51和GH54α-L-氨酸酶的催化核.
- 基于活动的探测成功地在A. niger的分泌物中发现了α-L-氨酸酶.
- 该方法扩展到其他八种生物质降解真菌.
结论:
- 循环利醇衍生的探针和抑制剂是鉴定真核生物碳水化合物降解系统的有价值的工具.
- 这种方法有助于高吞吐量发现α-L-氨酸酶.
- 开发的探针在酶学和生物技术中具有广泛的应用.
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