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26 天
FUT8催化过程涉及GDP-岩藻糖诱导的环结构活化,该活化促进了SN1-SN2 ...
α1,6-岩藻糖基转移酶FUT8的催化机制通过多尺度模拟解析,GDP-岩藻糖结合诱导环1和环2协同闭合,形成稳定活性位点。反应经异步SN2机制完成,涉及瞬态阴离子中间体(寿命350-800fs),无稳定中间体生成。环间氢键网络(Arg365-Asp368-Arg441)对活性构象维持至关重要 ...
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