IdeS Protease is a cysteine hydrolase secreted by the human pathogen Streptococcuspyogenes. This product use E. coli recombinant expression, high purity, has good enzyme digestion activity, can specifically identify IgG, and perform enzyme digestion at specific sites in the hinge region of the antibody, and IgG can be hydrolyzed into 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.