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Study on Fused Expression of the IgG-binding Domain of Streptococcal Protein G and Its IgG-binding Activity / 中国生物工程杂志

Xue-Nian HUANG; Yang XU; Yan-Ping LI.
Artículo en Zh | WPRIM | ID: wpr-686374
The IgG binding domain of Streptococcal Protein G which can selectively immobilizes the Fc regions of immunoglobulin G(IgG) is a kind of good material for oriented immobilization of antibodies in antibody microarrays.Here,genetically engineered three glutathione S-transferase(GST) fused proteins,bearing one,two and three B-Domains respectively(GST-GBx).The IgG-bindding ability of GST-GBx was investigated by ELISA.The data revealed that when the B-domain's quantity of GST-GBx is identical,the GST-GB3 is the most efficient protein among three GST-GBx protein both the capacity and sensibility of binding IgG.The GST-GB2 is the next one and GST-GB1 is the least one.Thus,the GST-GB3 has significantly predominance in comparison to GST-GB2 and GST-GB1.
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