Papain is used in the induction of T helper type 2 (Th2) immunity in the genital mucosa. Papain-functionalized gold nanoparticles as heterogeneous biocatalyst for bioanalysis and biopharmaceuticals analysis. Also used in the elucidation of the anti-proliferative activity of bovine blood hydrolyzates towards cancer cells including, lymphoma, breast cancer, hepatocytes and epithelial colorectal adenocarcinoma cells in cultureBiochem/physiol ActionsA cysteine protease that cleaves peptide bonds of basic amino acids, leucine, or glycine.pH optimum 6.0-7.0Also hydrolyzes esters and amides.Papain papaya latex has antifungal activity against C. albicans. It is a cysteine protease that cleaves peptide bonds of basic amino acids, leucine, or glycine.. The pH optimum is 6.0-7.0. Papain hydrol