title: Inactivation of papain by S-methylation of its cysteinyl residue with O-methylisourea.
mesh_terms: D001665:Binding Sites; D055598:Chemical Phenomena; D002621:Chemistry; D003545:Cysteine; D004492:Edetic Acid; D004789:Enzyme Activation; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008239:Lysine; D008433:Mathematics; D008623:Mercaptoethanol; D008628:Mercury; D008745:Methylation; D008782:Methylurea Compounds; D009942:Organometallic Compounds; D010206:Papain / Q000037:antagonists & inhibitors*; D013439:Sulfhydryl Reagents; D014508:Urea
chemical_list: D008782:Methylurea Compounds; D009942:Organometallic Compounds; D013439:Sulfhydryl Reagents; C002249:O-methylisourea; D008623:Mercaptoethanol; D014508:Urea; D004492:Edetic Acid; D010206:Papain; D008628:Mercury; D008239:Lysine; D003545:Cysteine