剑桥大学熊晓梨教授学术讲座:Coronavirus Fusion Triggering Mechanism Revealed by Electron Microscopy
2019-03-112824题 目:
Coronavirus Fusion Triggering Mechanism Revealed by Electron Microscopy
主讲人:
熊晓梨(
主持人:
陈凌 教授
时 间:
2019年3月11日(星期一)上午 10:30 – 12:00
地 点:
广州医科大学越秀校区16号楼五楼东侧大会议室
内容介绍:
In this talk, Dr.Xiong will present a cryo-EM structure of the SARS-CoV S glycoprotein in complex with a neutralising antibody isolated from a SARS survivor, this structure reveals an un-expected spike protein conformation that represents a fusogenic intermediate state. This intermediate state is shown to be induced by antibody binding to the S receptor binding domain. Inspired by this structure, we confirmed, by a series of biochemical experiments, that binding of the receptor rather than pH change or proteolytic activation serves the fusion trigger for SARS-CoV and possibly other coronaviruses. This result also suggests antibodies target the S receptor binding region may be advantageous due to its potential of inducing premature fusion triggering.
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