An isolated B1 domain polypeptide of bacterial Protein G which binds a Fab fragment of an IgG but substantially does not bind a Fc fragment of an IgG. Methods for the detection and purification of IgG Fc antibody fragments and Fab antibody fragments using the isolated GB1 domain polypeptides are also disclosed.
一种分离的细菌蛋白 G 的 B1 结构域
多肽,它能结合 IgG 的 Fab 片段,但基本上不结合 IgG 的 Fc 片段。还公开了使用分离的 GB1 结构域
多肽检测和纯化 IgG Fc
抗体片段和 Fab
抗体片段的方法。