Aspartate-190 is a determinant of IDH gamma subunit affinity for the manganese (MnII) ion, as well as for nicotinamide-adenine dinucleotide (NAD), but is not directly required for the catalytic reaction. | Role of alpha-Asp181, beta-Asp192, and gamma-Asp190 in the distinctive subunits of human NAD-specific isocitrate dehydrogenase. Bzymek KP, Colman RF. | 01/21/2010 |