Paired donor oxidoreductases, incorporation of molecular oxygen, 2-oxoglutarate as donor, include dehydrogenases that catalyze the reaction in which hydrogen or electrons are transferred from 2-oxoglutarate and one other donor, and one atom of oxygen is incorporated into each donor. 2-oxoglutarate-dependent dioxygenases include dehydrogenases that catalyze the reaction in which hydrogen or electrons are transferred from 2-oxoglutarate and one other donor, and one atom of oxygen is incorporated into each donor.