>3KOQ_1|Chains A, B, C, D|NITROREDUCTASE FAMILY PROTEIN|Clostridium difficile (272563) MGSDKIHHHHHHENLYFQGMNFVELAKKRYSCRNYQDRKVEKEKLEKVLDVARIAPTGGNRQPQRLIVIQEKEGINKLSKAANIYDAPLAILVCGDKDKVWTRPFDGKQLTDIDTSIVTDHMMLQATELGLASVWVCYFNPDIIREEFSLPDNLEPINILLMGYESKIPESPERHEKTRVPLSEIVSYETL