Pseudomonas aeruginosa has two nitric oxide (NO)-detoxification enzymes, NO reductase and flavohemoglobin, which catalyze the reduction and oxygenation of NO respectively. In this study, the NO reductase-deficient mutant showed decreased virulence against the silkworm Bombyx mori, but the flavohemoglobin-deficient mutant did not, indicating that NO-reduction is important to the full virulence of P. aeruginosa against B. mori.
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Arai et al. (2013) studied this question.
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