1.8.4.7 additional information other disulfide compounds are either inactive or far less active than oxidized glutathione, reduction of disulfide bonds in ricin, thioltransferase activity, GSH:insulin transhydrogenase activity Rattus norvegicus ? - ? 89 1.8.4.7 [xanthine dehydrogenase] + oxidized glutathione reverse conversion possible by dithioerythritol, not obtained in presence of GSH Rattus norvegicus [xanthine oxidase] + glutathione - r 260398 1.8.4.7 [xanthine dehydrogenase] + oxidized glutathione conversion into oxidase by treatment with proteolytic enzymes, storage at -20°C/-25°C or preincubation with either thiol reagents or whole liver homogenate. Can act in the opposite direction in the reduction of the disulfide bond of insulin and ricin Rattus norvegicus [xanthine oxidase] + glutathione - r 260398 1.8.4.7 [xanthine dehydrogenase] + oxidized glutathione reverse conversion possible by dithioerythritol, not obtained in presence of GSH Rattus norvegicus Wistar [xanthine oxidase] + glutathione - r 260398