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During a biochemical experiment, it was found that α-ketoglutarate acts as an inhibitor of isocitrate dehydrogenase. Would α-ketoglutarate act as a competitive or noncompetitive inhibitor?

During a biochemical experiment, it was found that α-ketoglutarate acts as an inhibitor of isocitrate dehydrogenase.

Would α-ketoglutarate act as a competitive or noncompetitive inhibitor?