Ki. Ogawa et al., THE NASB OPERON AND NASA GENE ARE REQUIRED FOR NITRATE NITRITE ASSIMILATION IN BACILLUS-SUBTILIS/, Journal of bacteriology, 177(5), 1995, pp. 1409-1413
Bacillus subtilis can use either nitrate or nitrite as a sole source o
f nitrogen. The isolation of the nasABCDEF genes of B. subtilis, which
are required for nitrate/nitrite assimilation, is reported. The proba
ble gene products include subunits of nitrate/nitrite reductases and a
n enzyme involved in the synthesis of siroheme, a cofactor for nitrite
reductase.