hydrogenase 1 was also shown to reduce a 2-nitroimidazole ( misonidazole ) and a 4-nitroimidazole in the presence of its required electron carriers including ferredoxin , the flavin coenzymes fad and fmn , and the low potential electron carrier dyes methyl- and benzyl-viologen .
C0026218
misonidazole
C0028179
nitroimidazole