Compound as reactive (4)

ammonia + ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetyl-β-D-glucosaminyl)muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine + H⁺ → H₂O + ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-isoglutaminyl-L-lysyl-D-alanyl-D-alanine

ammonia + a reduced electron donor + oxygen → an oxidized electron donor + H₂O + hydroxylamine

ammonia + ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetyl-β-D-glucosaminyl)muramoyl-L-alanyl-γ-O-phospho-D-glutamyl-L-lysyl-D-alanyl-D-alanine → ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-isoglutaminyl-L-lysyl-D-alanyl-D-alanine + phosphate

2 ammonia + Ni²⁺ + precorrin-2 → 2 H₂O + H⁺ + Ni-sirohydrochlorin

Compound as product (12)

H₂O + cyclic-AMP → ammonia + cyclic-IMP

H₂O + L-cystathionine → ammonia + 2-oxobutanoate + H⁺ + L-cysteine

H₂O + L-phenylalanine + oxygen → ammonia + hydrogen peroxide + 3-phenyl-2-oxopropanoate + H⁺

H₂O + (2R,4S)-2, 4-diaminopentanoate + NAD⁺ → 2 H⁺ + ammonia + (2R)-2-amino-4-oxopentanoate + NADH

12 a reduced ferredoxin [iron-sulfur] cluster + 40 H₂O + 40 ATP + N₂ → 12 an oxidized ferredoxin [iron-sulfur] cluster + 2 ammonia + 28 H⁺ + 3 H₂ + 40 phosphate + 40 ADP

H₂O + NADP⁺ + L-isoleucine → ammonia + NADPH + (S)-3-methyl-2-oxopentanoate

glycine + a reduced electron donor + phosphate + ADP → an oxidized electron donor + ammonia + acetate + H₂O + ATP

H₂O + L-tyrosine + oxygen → ammonia + hydrogen peroxide + (4-hydroxyphenyl)acetaldehyde + CO₂

H₂O + D-alanine → ammonia + pyruvate

nitrite → ammonia

H₂O + L-dopa + oxygen → ammonia + hydrogen peroxide + 3,4-dihydroxyphenylacetaldehyde + CO₂

NADPH + H⁺ + oxygen + 15,15-dimethyl-2-epi-fumiquinazoline A → ammonia + NADP⁺ + (2R)-3-[(9S, 9aR)-9-hydroxy-2,2-dimethyl-3-oxo-1H, 2H, 3H, 9H, 9aH-imidazolidino[1,2-a] indol-9-yl]-2-(2-acetyl-4-oxo-3,4-dihydroquinazolin-3-yl) propanoate

Reversible reaction (7)

ammonia + H⁺ ↔ ammonium

H₂O + (2R,4S)-2, 4-diaminopentanoate + NADP⁺ ↔ ammonia + (2R)-2-amino-4-oxopentanoate + NADPH

H₂O + L-aspartate + oxygen ↔ ammonia + hydrogen peroxide + oxaloacetate

a reduced ferredoxin [iron-sulfur] cluster + nitrite ↔ ammonia + an oxidized ferredoxin [iron-sulfur] cluster + H₂O

H₂O + 2,3-diaminopropionate ↔ 2 ammonia + pyruvate + H⁺

2 H⁺ + L-tryptophan + oxygen ↔ ammonia + H₂O + (indol-3-yl)acetaldehyde + CO₂

H₂O + NADP⁺ + L-leucine ↔ ammonia + NADPH + 4-methyl-2-oxopentanoate