Rmet_4817 narK; nitrate transporter; major facilitator superfamily
       Rmet_2072 Major facilitator superfamily MFS_1
       Rmet_2073 narK; nitrate/nitrite transporter
       Rmet_0277 nasF; ABC-type transporter, periplasmic component: NitT family
       Rmet_0276 nasE; ABC-type transporter, permease component: NitT family
       Rmet_0275 nasD; nitrate ATP-binding ABC transporter protein
       Rmet_2074 narG; nitrate reductase 1, alpha subunit
       Rmet_2075 narH; nitrate reductase 1, beta (Fe-S) subunit
       Rmet_2077 narI; nitrate reductase 1, gamma (cytochrome b(NR)) subunit
       Rmet_4063 napA; periplasmic nitrate reductase, large subunit
       Rmet_4062 napB; Nitrate reductase cytochrome c-type subunit
       Rmet_4821 nasA; assimilatory nitrate reductase (NADH) large subunit
       Rmet_4820 nasB; assimilatory nitrate reductase (NADH) small subunit
       Rmet_4818 nirB; assimilatory nitrite reductase (NAD(P)H-binding) large subunit precursor
       Rmet_4819 nirD; nitrite reductase, NAD(P)H-binding, small subunit
       Rmet_3172 nirS; Nitrite reductase precursor (Cytochrome cd1) (Cytochrome oxidase) (Hydroxylamine reductase)
       Rmet_3167 norB; Nitric oxide reductase large subunit
       Rmet_4917 nosZ; putative nitrous-oxide reductase
       Rmet_2083 2-nitropropane dioxygenase, NPD
       Rmet_0222 nppD; 2-nitropropane dioxygenase
       Rmet_3674 2-nitropropane dioxygenase, NPD
       Rmet_1181 gdhB; NAD-glutamate dehydrogenase
       Rmet_0398 gdhA; glutamate dehydrogenase
       Rmet_5114 gdhA; glutamate dehydrogenase
       Rmet_3263 gltB; glutamate synthase, large subunit
       Rmet_3262 gltD; glutamate synthase, 4Fe-4S protein, small subunit
       Rmet_5864 cynS; cyanate lyase; cyanate aminohydrolase
       Rmet_0105 can; carbonic anhydrase
       Rmet_5605 cynT; carbonic anhydrase
       Rmet_2078 cynT; carbonic anhydrase
       Rmet_5185 carbonic anhydrase

K02575 NRT2; MFS transporter, NNP family, nitrate/nitrite transporter
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]
K15864 nirS; nitrite reductase (NO-forming) / hydroxylamine reductase [EC:1.7.2.1 1.7.99.1]
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]
K15371 GDH2; glutamate dehydrogenase [EC:1.4.1.2]
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]
K00265 gltB; glutamate synthase (NADPH) large chain [EC:1.4.1.13]
K00266 gltD; glutamate synthase (NADPH) small chain [EC:1.4.1.13]
K01725 cynS; cyanate lyase [EC:4.2.1.104]
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]
K01673 cynT; carbonic anhydrase [EC:4.2.1.1]