Nitrite oxidation of myoglobin in perfused myocardium: implications for energy coupling in respiration.


Nitrite oxidation of oxymyoglobin in perfused rat myocardium under nonlimiting oxygen produces a detectable 1H nuclear magnetic resonance metmyoglobin (metMb) signal at -3.9 ppm. When the myocardium is perfused with < 10 mM nitrite, the 1H nuclear magnetic resonance MbO2 gamma CH3 Val E11 signal does not change intensity and the metMb reporter signal at -3… (More)


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