sentences:  GluDHs are ubiquitous enzymes that occupy an important branch-point between carbon and nitrogen metabolism.Both nicotinamide adenine dinucleotide (NAD) [EC 1.4.1.2] and nicotinamide adenine dinucleotide phosphate (NADP) dependent GluDH [EC 1.4.1.4] enzymes are present in "Plasmodia"; the NAD-dependent GluDH is relatively unstable and not useful for diagnostic purposes.Glutamate dehydrogenase provides an oxidizable carbon source used for the production of energy as well as a reduced electron carrier, NADH.