NRT; MFS transporter, NNP family, nitrate/nitrite transporter
Nitrate/nitrite transport system)
nrtA; nitrate/nitrite transport system substrate-binding protein
nrtB; nitrate/nitrite transport system permease protein
nrtCD; nitrate/nitrite transport system ATP-binding protein
Assimilatory nitrate reduction, nitrate => ammonia)
narB; assimilatory nitrate reductase
NR; nitrate reductase (NAD(P)H)
nasAB; assimilatory nitrate reductase
nirA; assimilatory nitrite reductase