| EC:1.4.1. | TG | PF | CP | HS |
| EC:1.4.1.2 Glutamate dehydrogenase. | TG | PF | CP | HS |
| EC:1.4.1.3 Glutamate dehydrogenase (NAD(P)+). | TG | PF | CP | HS |
| EC:1.4.1.4 Glutamate dehydrogenase (NADP+). | TG | PF | CP | HS |
| EC:1.4.1.13 Glutamate synthase (NADPH). | TG | PF | CP | HS |
| EC:1.4.1.14 Glutamate synthase (NADH). | TG | PF | CP | HS |
| EC:1.4.3. | TG | PF | CP | HS |
| EC:1.4.7.1 Glutamate synthase (ferredoxin). | TG | PF | CP | HS |
| EC:1.4.99.1 D-amino-acid dehydrogenase. | TG | PF | CP | HS |
| EC:1.4.99.2 Taurine dehydrogenase. | TG | PF | CP | HS |
| EC:1.7.1.1 Nitrate reductase (NADH). | TG | PF | CP | HS |
| EC:1.7.1.2 Nitrate reductase (NAD(P)H). | TG | PF | CP | HS |
| EC:1.7.1.3 Nitrate reductase (NADPH). | TG | PF | CP | HS |
| EC:1.7.1.4 Nitrite reductase [NAD(P)H]. | TG | PF | CP | HS |
| EC:1.7.1.10 Hydroxylamine reductase (NADH). | TG | PF | CP | HS |
| EC:1.7.2.1 Nitrite reductase (NO-forming). | TG | PF | CP | HS |
| EC:1.7.2.2 Nitrite reductase (cytochrome; ammonia-forming). | TG | PF | CP | HS |
| EC:1.7.3.1 Nitroethane oxidase. | TG | PF | CP | HS |
| EC:1.7.3.4 Hydroxylamine oxidase. | TG | PF | CP | HS |
| EC:1.7.7.1 Ferredoxin--nitrite reductase. | TG | PF | CP | HS |
| EC:1.7.7.2 Ferredoxin--nitrate reductase. | TG | PF | CP | HS |
| EC:1.7.99.1 Hydroxylamine reductase. | TG | PF | CP | HS |
| EC:1.7.99.4 Nitrate reductase. | TG | PF | CP | HS |
| EC:1.7.99.6 Nitrous-oxide reductase. | TG | PF | CP | HS |
| EC:1.7.99.7 Nitric-oxide reductase. | TG | PF | CP | HS |
| EC:1.9.6.1 Nitrate reductase (cytochrome). | TG | PF | CP | HS |
| EC:1.13.11.32 2-nitropropane dioxygenase. | TG | PF | CP | HS |
| EC:1.13.12.- | TG | PF | CP | HS |
| EC:1.14.12.1 Anthranilate 1,2-dioxygenase (deaminating, decarboxylating). | TG | PF | CP | HS |
| EC:1.14.13.35 Anthranilate 3-monooxygenase (deaminating). | TG | PF | CP | HS |
| EC:1.18.6.1 Nitrogenase. | TG | PF | CP | HS |
| EC:1.19.6.1 Nitrogenase (flavodoxin). | TG | PF | CP | HS |
| EC:2.1.2.10 Aminomethyltransferase. | TG | PF | CP | HS |
| EC:2.6.1. | TG | PF | CP | HS |
| EC:2.7.2.2 Carbamate kinase. | TG | PF | CP | HS |
| EC:3.5.1. | TG | PF | CP | HS |
| EC:3.5.1.1 Asparaginase. | TG | PF | CP | HS |
| EC:3.5.1.2 Glutaminase. | TG | PF | CP | HS |
| EC:3.5.1.35 D-glutaminase. | TG | PF | CP | HS |
| EC:3.5.1.38 Glutaminase-(asparagin-)ase. | TG | PF | CP | HS |
| EC:3.5.1.49 Formamidase. | TG | PF | CP | HS |
| EC:3.5.3. | TG | PF | CP | HS |
| EC:3.5.4. | TG | PF | CP | HS |
| EC:3.5.5.1 Nitrilase. | TG | PF | CP | HS |
| EC:3.5.5.2 Ricinine nitrilase. | TG | PF | CP | HS |
| EC:4.1.99.1 Tryptophanase. | TG | PF | CP | HS |
| EC:4.1.99.2 Tyrosine phenol-lyase. | TG | PF | CP | HS |
| EC:4.2.1.1 Carbonate dehydratase. | TG | PF | CP | HS |
| EC:4.2.1.104 Cyanate hydratase. | TG | PF | CP | HS |
| EC:4.3.1. | TG | PF | CP | HS |
| EC:4.3.1.1 Aspartate ammonia-lyase. | TG | PF | CP | HS |
| EC:4.3.1.2 Methylaspartate ammonia-lyase. | TG | PF | CP | HS |
| EC:4.3.1.3 Histidine ammonia-lyase. | TG | PF | CP | HS |
| EC:4.3.1.5 Phenylalanine ammonia-lyase. | TG | PF | CP | HS |
| EC:4.4.1.1 Cystathionine gamma-lyase. | TG | PF | CP | HS |
| EC:4.4.1.2 Homocysteine desulfhydrase. | TG | PF | CP | HS |
| EC:4.4.1.8 Cystathionine beta-lyase. | TG | PF | CP | HS |
| EC:6.3.1.1 Aspartate--ammonia ligase. | TG | PF | CP | HS |
| EC:6.3.1.2 Glutamate--ammonia ligase. | TG | PF | CP | HS |
| EC:6.3.1.4 Aspartate--ammonia ligase (ADP-forming). | TG | PF | CP | HS |
| EC:6.3.1.5 NAD(+) synthase. | TG | PF | CP | HS |
| EC:6.3.4.16 Carbamoyl-phosphate synthase (ammonia). | TG | PF | CP | HS |
| EC:6.3.5.4 Asparagine synthase (glutamine-hydrolyzing). | TG | PF | CP | HS |