3r6w | pdb_00003r6w

paAzoR1 binding to nitrofurazone

spinqualitylabelsall models 3r6w, resolution 2.08Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3r6w is a 2 chain structure with sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: FMN, GOL, NFZ, SO4 Related: 2v9c, 3lt5, 3keg Gene: azoR1, PA0785 (Pseudomonas aeruginosa) Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed Azoreductases are well known for azo pro-drug activation by gut flora. We show that azoreductases have a wider role in drug metabolism than previously thought as they can also reduce and hence activate nitrofurazone. Nitrofurazone, a nitroaromatic drug, is a broad spectrum antibiotic which has until now been considered as activated in bacteria by nitroreductases. The structure of the azoreductase with nitrofurazone bound was solved at 2.08 A and shows nitrofurazone in an active conformation. Based on the structural information, the kinetics and stoichiometry of nitrofurazone reduction by azoreductase from P. aeruginosa, we propose a mechanism of activation which accounts for the ability of azoreductases to reduce both azo and nitroaromatic drugs. This mode of activation can explain the cytotoxic side-effects of nitrofurazone through human azoreductase homologues. Activation of nitrofurazone by azoreductases: multiple activities in one enzyme.,Ryan A, Kaplan E, Laurieri N, Lowe E, Sim E Sci Rep. 2011;1:63. Epub 2011 Aug 12. PMID:22355582 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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