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HC-Pro 抑制 HEN1 甲基转移酶活性,引发 AGO1 自噬性降解的机制解析
在植物的微观世界里,病毒与植物的对抗时刻都在上演。RNA 沉默是植物抵御病毒入侵的重要防线,而马铃薯 Y 病毒(potyvirus)编码的辅助成分蛋白酶(Helper-component proteinase,HC-Pro)作为病毒抑制 RNA 沉默(VSRs)的 “利器”,却让这场防御战变得复杂起来。
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