Nitric oxide is a physiological substrate for mammalian peroxidases.


We now show that NO serves as a substrate for multiple members of the mammalian peroxidase superfamily under physiological conditions. Myeloperoxidase (MPO), eosinophil peroxidase, and lactoperoxidase all catalytically consumed NO in the presence of the co-substrate hydrogen peroxide (H(2)O(2)). Near identical rates of NO consumption by the peroxidases were… (More)


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