[Ferredoxin-dependent glutamate synthase of Chlorella].

Ferredoxin-dependent glutamate synthase has been found in cells of thermophylic Chlorella strain Ch. pyrenoidosa 82T. The enzyme is active with its own ferredoxin and that of Spirulina. Glutamate synthase activity increases during nitrogen starvation and than decreases in the course of successive ammonium assimilation. The scheme of ammonium assimilation in Chlorella pyrenoidosa 82T cells is proposed.