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adaptin, AP (衔接蛋白)

名词解释题

2022-01-09 15:48

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正确答案

参与披网格蛋白小泡组装的一种蛋白质，分子量为100kDa，在披网格蛋白小泡组装中与受体的细胞质结构域相互作用，起衔接作用。有两种类型衔接蛋白，AP1参与反面高尔基体的披网格蛋白小泡的组装，AP2则参与从细胞质膜形成的披网格蛋白的组装。
M6P受体蛋白既存在于反面高尔基体又存在于细胞质膜，所以这种受体既能同AP1作用又能与AP2相互作用。衔接蛋白AP2是一个二聚体，并且是由α衔接蛋白（α链）和β衔接蛋白（β链）两种衔接蛋白组成的异二聚体。

试题解析

标签：真核细胞内膜系统大学试题

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