Compound as reactive (1)
4-aminobutanoate + L-histidine + ATP → homocarnosine + H+ + phosphate + ADP
Compound as product (7)
H+ + L-glutamate → 4-aminobutanoate + CO2
H2O + 4-aminobutanal + NAD+ → 2 H+ + 4-aminobutanoate + NADH
H2O + homocarnosine → 4-aminobutanoate + L-histidine
H2O + 4-methylaminobutanoate + oxygen → hydrogen peroxide + 4-aminobutanoate + formaldehyde
H2O + 4-(γ-L-glutamylamino)butanoate → 4-aminobutanoate + L-glutamate
H2O + 4-guanidinobutanoate → 4-aminobutanoate + urea
H2O + 4-acetamidobutanoate → acetate + 4-aminobutanoate
Reversible reaction (5)
2 H2O + 1-pyrroline + NAD+ ↔ 2 H+ + 4-aminobutanoate + NADH
H2O + 4-aminobutanal + NADP+ ↔ 2 H+ + 4-aminobutanoate + NADPH
4-aminobutanoate + pyruvate ↔ succinate semialdehyde + L-alanine
4-aminobutanoate + glyoxylate ↔ succinate semialdehyde + glycine
4-aminobutanoate + 2-oxoglutarate ↔ succinate semialdehyde + L-glutamate