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【多选题】
以下有关信号学说表述 错误 的是( )
A.
mRNA 的信号密码首先合成信号肽
B.
SRP 识别信号肽，并与之结合形成 SRP- 核糖体复合体
C.
SRP 介导 SRP- 核糖体复合体结合到内质网上，又继续进行蛋白质合成
D.
信号肽可与内质网膜上的受体蛋白结合在一起，形成临时通道
E.
SRP - 核糖体复合体上的多肽链合成完毕后，由 SRP 引导与内质网结合
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