Competitive substrate and inhibitor interactions at the physiologically relevant active site of nitrogenase.

Abstract excerpt

Nitrogenase catalyzes the MgATP-dependent reduction of dinitrogen gas to ammonia. In addition to the physiological substrate, nitrogenase catalyzes reduction of a variety of other multiply bonded substrates, such as acetylene, nitrous oxide, and azide. Although carbon monoxide (CO) is not reduced by nitrogenase, it is a potent inhibitor of all nitrogenase catalyzed substrate reductions except proton reduction....

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