1.1.1.404 | homology modeling of structure. The active site is slightly positively charged and situated in a deep pit on the surface. The putative binding pocket is adjacent to the cofactor flavin mononucleotide and the 2Fe-2S cluster. It is formed mainly by residues Ser78, Arg79, Phe225, Gly226, Ala227, Ala228, Leu229, Gln275 and the cofactor FMN |