ID 1.1.1.286 DE isocitrate--homoisocitrate dehydrogenase. AN homoisocitrate--isocitrate dehydrogenase. CA (1) D-threo-isocitrate + NAD(+) = 2-oxoglutarate + CO2 + NADH. CA (2) (2R,3S)-homoisocitrate + NAD(+) = 2-oxoadipate + CO2 + NADH. CC -!- Unlike EC 1.1.1.41 and EC 1.1.1.87, this enzyme, from Pyrococcus CC horikoshii, can use both isocitrate and homoisocitrate as substrate. CC -!- May play a role in both the lysine and glutamate biosynthesis CC pathways. DR O59394, HICDH_PYRHO; Q72IW9, HICDH_THET2; Q5SIJ1, HICDH_THET8; //