Studies on the differential inhibition by azide on the nitrite/nitrous oxide level of denitrification

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Abstract
A gas chromatographic method was used to demonstrate that nitrite can counteract the inhibition by azide of nitrous oxide reductase activity in denitrifiers. This effect explains why azide (and cyanide) can inhibit nitrogen production from nitrous oxide in these organisms but have little effect on nitrogen production from nitrite. Although the physiological basis by which nitrite opposes the action of azide remains unknown, extensive destruction of azide by nitrite can be ruled out as an explanation.