Reaction catalyzed by dissimilatory sulfite reductase (1.8.99.5)
+
a [DsrC protein]-dithiol
+
2
+
2
=
HSe-
+
a [DsrC protein]-disulfide
+
2
+
3
H2O
SeO32-
+
a [DsrC protein]-dithiol
+
2 reduced methyl viologen
+
2 H+
=
HSe-
+
a [DsrC protein]-disulfide
+
2 oxidized methyl viologen
+
3 H2O
