“…3-mercaptopyruvate sulfurtransferase (MST, EC 2.8.1.2) catalyzes a transsulfuration. Recently, it has been revealed that MST produces hydrogen sulfide and polysulfides [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] and plays important roles in living organisms [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. MST is activated by the Trx-TRD, but not the GSH-GRD, reducing system due to differences in redox potential [ 44 , 45 , 46 , 47 ].…”