Predicted to enable isocitrate dehydrogenase (NAD+) activity. Predicted to be involved in NADH metabolic process; carboxylic acid metabolic process; and tricarboxylic acid cycle. Located in mitochondrion. Is expressed in several structures, including alimentary system; integumental system; nervous system; respiratory system; and sensory organ. Human ortholog(s) of this gene implicated in retinitis pigmentosa 46. Orthologous to human IDH3B (isocitrate dehydrogenase (NAD(+)) 3 non-catalytic subunit beta). [provided by Alliance of Genome Resources, Apr 2022]