Kucera I, Gawlasová J
Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czechoslovakia.
Biochem Int. 1992 Dec;28(4):701-6.
Cellular activities of nitric oxide producing nitrite reductase (NiR) and nitric oxide reductase (NOR) in Paracoccus denitrificans increased in parallel upon anaerobic adaptation of aerobically grown cells. In addition, both activities exhibited comparable dependences on oxygen supply into the growing culture. The results suggest that the maintenance of a sufficiently high NOR/NiR activity ratio plays an important role in preventing nitric oxide accumulation and its toxic effects on the cells during denitrification.
在好氧生长的细胞进行厌氧适应后，反硝化副球菌中产生一氧化氮的亚硝酸还原酶（NiR）和一氧化氮还原酶（NOR）的细胞活性平行增加。此外，这两种活性对生长培养物中的氧气供应表现出相似的依赖性。结果表明，维持足够高的NOR/NiR活性比在防止反硝化过程中一氧化氮积累及其对细胞的毒性作用方面起着重要作用。
