AXYL_04245 formamidase
       AXYL_02956 nitrate/nitrite transporter
       AXYL_02957 narK; nitrite extrusion protein
       AXYL_05135 nitrate transport protein NrtA
       AXYL_05134 ntrB; nitrate ABC transporter, permease protein
       AXYL_05133 nitrate transport protein NasD
       AXYL_02958 nitrate reductase, alpha subunit
       AXYL_02959 narH; nitrate reductase, beta subunit
       AXYL_02961 narI; respiratory nitrate reductase, gamma subunit
       AXYL_02452 napA; periplasmic nitrate reductase, large subunit
       AXYL_02451 napB; cytochrome c-type protein NapB
       AXYL_05131 nitrate reductase
       AXYL_05132 nitrite reductase [NAD(P)H] domain protein
       AXYL_03855 nirB; nitrite reductase [NAD(P)H] large subunit
       AXYL_03856 nirD; nitrite reductase [NAD(P)H], small subunit
       AXYL_02390 nirK; nitrite reductase (NO-forming)
       AXYL_02387 nitric oxide reductase large subunit
       AXYL_04548 nosZ; nitrous-oxide reductase
       AXYL_02914 2-nitropropane dioxygenase family protein 4
       AXYL_00201 2-nitropropane dioxygenase family protein 1
       AXYL_00401 2-nitropropane dioxygenase family protein 2
       AXYL_00890 2-nitropropane dioxygenase family protein 3
       AXYL_03876 2-nitropropane dioxygenase family protein 5
       AXYL_01231 nit1; nitrilase 1
       AXYL_01249 nit2; nitrilase 2
       AXYL_02857 glutamate dehydrogenase
       AXYL_06176 gdhA; NADP-specific glutamate dehydrogenase
       AXYL_06484 glutamine synthetase, catalytic domain protein
       AXYL_00207 ferredoxin-dependent glutamate synthase
       AXYL_00206 gltD; glutamate synthase subunit beta
       AXYL_00532 carbonic anhydrase family protein 1
       AXYL_03741 carbonic anhydrase family protein 2
       AXYL_02964 cah; carbonic anhydrase

K01455 E3.5.1.49; formamidase [EC:3.5.1.49]
K02575 NRT2; MFS transporter, NNP family, nitrate/nitrite transporter
K02575 NRT2; MFS transporter, NNP family, nitrate/nitrite transporter
K15576 nrtA; nitrate/nitrite transport system substrate-binding protein
K15577 nrtB; nitrate/nitrite transport system permease protein
K15578 nrtC; nitrate/nitrite transport system ATP-binding protein [EC:7.3.2.4]
K00370 narG; nitrate reductase / nitrite oxidoreductase, alpha subunit [EC:1.7.5.1 1.7.99.-]
K00371 narH; nitrate reductase / nitrite oxidoreductase, beta subunit [EC:1.7.5.1 1.7.99.-]
K00374 narI; nitrate reductase gamma subunit [EC:1.7.5.1 1.7.99.-]
K02567 napA; nitrate reductase (cytochrome) [EC:1.9.6.1]
K02568 napB; nitrate reductase (cytochrome), electron transfer subunit
K00372 nasC; assimilatory nitrate reductase catalytic subunit [EC:1.7.99.-]
K26139 nasD; nitrite reductase [NAD(P)H] large subunit [EC:1.7.1.4]
K00362 nirB; nitrite reductase (NADH) large subunit [EC:1.7.1.15]
K00363 nirD; nitrite reductase (NADH) small subunit [EC:1.7.1.15]
K00368 nirK; nitrite reductase (NO-forming) [EC:1.7.2.1]
K04561 norB; nitric oxide reductase subunit B [EC:1.7.2.5]
K00376 nosZ; nitrous-oxide reductase [EC:1.7.2.4]
K00459 ncd2; nitronate monooxygenase [EC:1.13.12.16]
K00459 ncd2; nitronate monooxygenase [EC:1.13.12.16]
K00459 ncd2; nitronate monooxygenase [EC:1.13.12.16]
K00459 ncd2; nitronate monooxygenase [EC:1.13.12.16]
K00459 ncd2; nitronate monooxygenase [EC:1.13.12.16]
K01501 E3.5.5.1; nitrilase [EC:3.5.5.1]
K01501 E3.5.5.1; nitrilase [EC:3.5.5.1]
K00261 GLUD1_2; glutamate dehydrogenase (NAD(P)+) [EC:1.4.1.3]
K00262 E1.4.1.4; glutamate dehydrogenase (NADP+) [EC:1.4.1.4]
K01915 glnA; glutamine synthetase [EC:6.3.1.2]
K00265 gltB; glutamate synthase (NADPH) large chain [EC:1.4.1.13]
K00266 gltD; glutamate synthase (NADPH) small chain [EC:1.4.1.13]
K01673 cynT; carbonic anhydrase [EC:4.2.1.1]
K01673 cynT; carbonic anhydrase [EC:4.2.1.1]
K01673 cynT; carbonic anhydrase [EC:4.2.1.1]