ID 1.8.1.21 DE dissimilatory dimethyldisulfide reductase. CA 2 methanethiol + NAD(+) = dimethyl disulfide + H(+) + NADH. CC -!- The enzyme's activity has been demonstrated in the bacterium CC Thiobacillus thioparus E6. CC -!- The methanethiol formed is eventually oxidized to sulfate and carbon CC dioxide, and the latter assimilated for autotrophic growth. //