1.4.1.13 evolution phylogenetic and molecular evolutionary analyses 725886 1.4.1.13 physiological function key enzyme in the early stages of ammonia assimilation in bacteria, algae and plants, catalyzing the reductive transamidation of the amido nitrogen from glutamine to 2-oxoglutarate to form two molecules of glutamate 725886 1.4.1.13 physiological function the small subunit-like protein of glutamate synthase might play an important role in redox maintenance, L-cysteine/L-cystine homeostasis, iron reduction, and the activation of metronidazole -, 725401