Isocitrate dehydrogenases catalyze the oxidative decarboxylation of isocitrate to 2-oxoglutarate. These enzymes belong to two distinct subclasses, one of which utilizes NAD(+) as the electron acceptor and the other NADP(+). Five isocitrate dehydrogenases have been reported: three NAD(+)-dependent isocitrate dehydrogenases, which localize to the mitochondrial matrix, and two NADP(+)-dependent isocitrate dehydrogenases, one of which is mitochondrial and the other predominantly cytosolic. NAD(+)-dependent isocitrate dehydrogenases catalyze the allosterically regulated rate-limiting step of the tricarboxylic acid cycle. Each isozyme is a heterotetramer that is composed of two alpha subunits, one beta subunit, and one gamma subunit. The protein encoded by this gene is the gamma subunit of one isozyme of NAD(+)-dependent isocitrate dehydrogenase. This gene is a candidate gene for periventricular heterotopia. Several alternatively spliced transcript variants of this gene have been described, but only some of their full length natures have been determined.
gamma subunit; H-IDHG; IDH-gamma; isocitrate dehydrogenase; isocitrate dehydrogenase 3 (NAD+) gamma; isocitrate dehydrogenase 3 gamma; isocitrate dehydrogenase 3, gamma; isocitrate dehydrogenase [NAD] subunit gamma; Isocitrate dehydrogenase [NAD] subunit gamma 1, mitochondrial; Isocitrate dehydrogenase [NAD] subunit gamma, mitochondrial; isocitrate dehydrogenase, NAD(+)-specific, mitochondrial, gamma subunit; Isocitric dehydrogenase subunit gamma; mitochondrial; NAD (H)-specific isocitrate dehydrogenase gamma subunit; NAD(+)-specific; NAD(+)-specific ICDH subunit gamma; NAD+-isocitrate dehydrogenase gamma subunit; NAD+-specific ICDH