title: Reaction of protein disulfide groups with Ellman's reagent: a case study of the number of sulfhydryl and disulfide groups in Aspergillus oryzae  -amylase, papain, and lysozyme.
mesh_terms: D000681:Amylases / Q000032:analysis*; D001230:Aspergillus / Q000201:enzymology; D001565:Benzoates; D004220:Disulfides / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D009113:Muramidase / Q000032:analysis*; D010206:Papain / Q000032:analysis*; D013053:Spectrophotometry; D013438:Sulfhydryl Compounds / Q000032:analysis*; D013440:Sulfides / Q000032:analysis*
chemical_list: D001565:Benzoates; D004220:Disulfides; D007202:Indicators and Reagents; D013438:Sulfhydryl Compounds; D013440:Sulfides; D000681:Amylases; D009113:Muramidase; D010206:Papain