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We report here the 2.3 Å resolution structure of the hypothetical uricase regulator (HucR) from Deinococcus radiodurans R1. HucR, a member of the MarR family of DNA-binding proteins, was previously shown to repress its own expression as well as that of a uricase, a repression that is alleviated both in vivo and in vitro upon binding uric acid, the substrate for uricase. As uric acid is a potent scavenger...
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