使用以功能为先的"侦察片段"为基础的方法,开发构造动态酶机械酶的全性共价抑制剂
bioRxiv : the preprint server for biology
|October 9, 2023
概括
研究人员开发了一种新型的共价抑制剂策略,用于向酶,这是DNA/RNA重塑中的必不可少的酶. 这种方法利用了.
科学领域:
- 生物化学和分子生物学
- 酶学 是一种酶学.
- 药物发现 药物发现 药物发现
背景情况:
- 螺旋酶是关键的ATP依赖机械酶,参与DNA和RNA代谢,对于复制,修复和翻译等过程至关重要.
- 失调的酶活性与癌症和病毒感染有关,这使得它们成为治疗干预的有吸引力的目标.
- 开发选择性化学抑制剂对酶具有挑战性,因为它们的动态构造和保存的活性位点.
研究的目的:
- 探索电友"侦察碎片"在开发对酶的共价抑制剂方面的潜力.
- 建立一种功能优先的方法,将酶定试验和质谱学结合起来,用于共价抑制剂的发现.
- 为了确定对病毒 (SARS-CoV-2 nsp13) 和人类 (BLM, WRN) 螺旋酶的选择性共价抑制剂.
主要方法:
- 采用了功能优先策略,将酶分析与反体探针对结合在一起.
- 采用质谱测量用于化学蛋白质分子分析和抑制剂识别.
- 测试了针对SARS-CoV-2 nsp13 (超家族-1 螺旋酶) 和人类BLM和WRN (超家族-2 螺旋酶) 的侦察碎片.
主要成果:
- 开发了一种共价抑制剂,可以选择性地向SARS-CoV-2 nsp13.13上的全位.
- 证明了侦察碎片抑制了人类基BLM和WRN的活性.
- 验证了侦察碎片在准形态动态机械酶方面的有效性.
结论:
- 这些发现为开发针对化酶的向共价抑制剂提供了一个有希望的策略.
- 这种方法在开发治疗癌症和病毒性疾病的疗法方面具有潜在的应用.
- 该方法可以扩展到具有动态结构的其他具有挑战性的酶标.
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