3BM1:
reference: Crystal structure of a minimal nitroreductase, ydjA, from Escherichia coli K12 with and without FMN cofactor., Choi JW, Lee J, Nishi K, Kim YS, Jung CH, Kim JS, J Mol Biol. 2008 Mar 14;377(1):258-67. Epub 2008 Jan 11. PMID: 18241886

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