名词解析

clathrin (网格蛋白)

正确答案

是一种进化上高度保守的蛋白质,由分子量为180kDa的重链和分子量为35~40kDa的轻链组成二聚体,三个二聚体形成包被的基本结构单位--三联体骨架(triskelion),称为三腿蛋白(three-legged protein)。有两种类型的轻链:α链和β链,二者的氨基酸有60%是相同的,但还不知道它们在功能上有什么差别。许多三腿复合物再组装成六边形或五边形网格结构,即包被亚基,然后由这些网格蛋白亚基组装成披网格蛋白小泡。

答案解析

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