Publisher： John Wiley & Sons Inc
E-ISSN： 1744-3091|66|1|2-7
ISSN： 1744-3091
Source： Acta Crystallographica Section F, Vol.66, Iss.1, 2010-01, pp. : 2-7
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Abstract
Azoreductase 1 from Pseudomonas aeruginosa strain PAO1 (paAzoR1) catalyses the activation of the prodrug balsalazide and reduces the azo dye methyl red using reduced nicotinamide adenine dinucleotide cofactor as an electron donor. To investigate the mechanism of the enzyme, a Y131F mutation was introduced and the enzymic properties of the mutant were compared with those of the wild‐type enzyme. The crystallographic structure of the mutant with methyl red bound was solved at 2.1 Å resolution and compared with the wild‐type structure. Tyr131 is important in the architecture of the active site but is not essential for enzymic activity.
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