EPISODE · Feb 22, 2026 · 17 MIN
536-阿扎那韦介导的GPCR巨型复合物组装与持续信号传导
from 聊聊Sci
这项研究通过生存压力选择(SPS)方法,在酵母系统中成功筛选出一种名为阿扎那韦(Atazanavir)的通用型变构调节剂。该化合物能够作用于多种A类G蛋白偶联受体(GPCRs),打破了受体与G蛋白或β-arrestin结合互斥的传统认知。研究揭示受体、G蛋白与β-arrestin可共同构建一种大复合体(megacomplex),从而实现持续的信号传导。冷冻电镜结构进一步证实,这种非典型的结合模式不依赖受体C末端或膜磷脂相互作用。这一发现为开发具有独特药理特性的新型GPCR靶向药物提供了重要的结构基础和理论依据。References: He G, Sun Q, Xu X, et al. A GPCR-G protein-β-arrestin megacomplex enabled by a versatile allosteric modulator[J]. Cell, 2026.前往小宇宙评论区与主播互动
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536-阿扎那韦介导的GPCR巨型复合物组装与持续信号传导
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