Reaction catalyzed by 3-mercaptopyruvate sulfurtransferase (2.8.1.2)
+
=
hydrogen sulfide
+
+
[3-mercaptopyruvate sulfurtransferase]-S-sulfanyl-L-cysteine
+
reduced thioredoxin
=
hydrogen sulfide
+
[3-mercaptopyruvate sulfurtransferase]-L-cysteine
+
oxidized thioredoxin