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IdeZ Protease secreted by the Streptococcus equi subspecies zooepidemicus. This product is an engineered recombinant protease over expressed in Escherichia coli. It can specifically identify IgG, and perform enzyme digestion at specific sites in the hinge region of the antibody, and produce F（ab'）2 fragments and Fc fragments, which can identify human and other animal IgG, such as mouse, rabbit, monkey, sheep and human animal chimeric IgG, etc, It can be used for structural characterization analysis of antibodies and fusion protein drugs.