1.8.2.4 dimethyl sulfide:cytochrome c2 reductase - 1.8.2.6 S-disulfanyl-L-cysteine oxidoreductase - 1.8.2.3 sulfide-cytochrome-c reductase (flavocytochrome c) - 1.8.2.1 sulfite dehydrogenase (cytochrome) - 1.8.2.7 thiocyanate desulfurase - 1.8.2.2 thiosulfate dehydrogenase - 1.8.2.5 thiosulfate reductase (cytochrome) -