disulfide oxidoreductase activity Reactome:R-HSA-1222644 Reactome:R-HSA-1222655 molecular_function Reactome:R-HSA-1222417 disulphide oxidoreductase activity Catalysis of the reaction: substrate with reduced sulfide groups = substrate with oxidized disulfide bonds. GO:0015036 Reactome:R-HSA-1222690 oxidoreductase activity, acting on a sulfur group of donors