Endo S2, secreted by Streptococcus pyogenes, deglycosylates the conserved N-linked glycan at Asn297 on IgG Fc to eliminate its effector functions and evade the immune system. EndoS2 specifically hydrolyzes diverse glycans on the Fc region of IgG antibodies using a mechanism that relies on its glycoside hydrolase domain and a coevolved carbohydrate-binding module[1][2]. Endo S2 Protein, S. pyogenes (His) is the recombinant Endo S2 protein, expressed by E. coli , with N-6*His labeled tag.