title: Is the thiolate--imidazolium ion pair the catalytically important form of papain?
mesh_terms: D000081:Acetamides / Q000494:pharmacology*; D000085:Acetates / Q000494:pharmacology*; D000478:Alkylation; D055598:Chemical Phenomena; D002621:Chemistry; D007700:Kinetics; D010206:Papain / Q000378:metabolism*; D013329:Structure-Activity Relationship
chemical_list: D000081:Acetamides; D000085:Acetates; C013874:chloroacetamide; C006972:chloroacetic acid; D010206:Papain