问答题

下列有关层粘连蛋白的叙述，错误的是( )
A．由3条多肽链通过盐键相连接 B．属于糖蛋白 C．属于Ⅳ型胶原基质成分 D．含有能与细胞表面受体结合的RGD模序
E．主要存在于基底膜

A.由3条多肽链通过盐键相连接
B.属于糖蛋白
C.属于Ⅳ型胶原基质成分
D.含有能与细胞表面受体结合的RGD模序

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