“…and in contrast, decreased with cysteine and glutathione (GSH).2) Such changes in the activity of DNR were ascribed to its activation and inactivation, respectively, because of their irreversibility. Stimulation of cellular activity of DNR by NaCI has been reported in Micrococcus halodenitrijicans, 3) and NaCI-enhanced accumulation of nitrite has also been observed in bacteria belonging to Enterobacterium and Klebsiella in fermented pickles. 4 ) However, the effects of NaCI shown in these articles appear to be reversible, although the authors did not mention reversibility.…”