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生物通
1月
RAD51 D-loop结构揭示真核生物链交换机制:从DNA弯曲到碱基对打开的 ...
本研究针对真核生物同源重组中RAD51介导的链交换机制不明确的问题,通过冷冻电镜技术捕获了五个关键中间体结构,结合分子动力学模拟,揭示了由N端结构域(NTD)引导的DNA逐步弯曲、L2环插入促进链分离以及S2位点稳定产物的空间协同机制,为理解DNA修复提供了 ...
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