Reaction catalyzed by thioredoxin-independent methionine sulfoxide reductases B (1.8.4.B3)

+

bovine liver thionein

=

+

bovine liver thionein

+

H2O

dabsyl-L-methionine (R)-S-sulfoxide

+

bovine liver thionein

=

dabsyl-L-methionine

+

bovine liver thionein

+

H2O