We report the cloning and sequencing of the Brucella abortus oxyR homolog and provide evidence that the transcription product of this gene binds to the B. abortus catalase promoter region. A gene replacement/deletion Brucella oxyR mutant exhibits increased sensitivity to prolonged exposure to H(2)O(2) and is unable to adapt to H(2)O(2) in the environment.
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Kim et al. (2000) studied this question.
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