Any process that activates or increases the frequency, rate or extent of the regulated release of gamma-aminobutyric acid.

The regulated release of gamma-aminobutyric acid by a cell or a tissue. The gamma-aminobutyric acid is the principal inhibitory neurotransmitter in the brain but is also found in several extraneural tissues.

The directed movement of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

The controlled release of acid by a cell or a tissue.

Any process that stops, prevents, or reduces the frequency, rate or extent of the controlled release of glutamate.

Catalysis of the reaction: L-ascorbate + dopamine + O(2) = (R)-noradrenaline + dehydroascorbate + H(2)O.

Catalysis of the reaction: AH(2) + Ecdysone + O(2) = 20-hydroxyecdysone + A + H(2)O.

Catalysis of the reaction: L-kynurenine + H(+) + NADPH + O(2) = 3-hydroxy-L-kynurenine + H(2)O + NADP(+).

Catalysis of the reaction: L-tyrosine + O2 = L-DOPAquinone + H2O. This reaction can use both monophenols (such as tyrosine) and catechols (o-diphenols) as substrates.

Catalysis of the reaction: peptidyl-glycine + ascorbate + O2 = peptidyl(2-hydroxyglycine) + dehydroascorbate + H2O.

Catalysis of the reaction: L-phenylalanine + tetrahydrobiopterin + O2 = L-tyrosine + 4-alpha-hydroxytetrahydrobiopterin.

Catalysis of an oxidation-reduction (redox) reaction in which hydrogen or electrons are transferred from reduced pteridine and one other donor, and one atom of oxygen is incorporated into one donor.

Catalysis of the reaction: H(+) + NADPH + O(2) + squalene = (S)-2,3-epoxysqualene + H(2)O + NADP(+).

Catalysis of the reaction: a steroid + reduced adrenal ferredoxin + O2 = an 11-beta-hydroxysteroid + oxidized adrenal ferredoxin + H2O.

Catalysis of the reaction: a steroid + AH2 + O2 = a 17a-hydroxysteroid + A + H2O.

Catalysis of the reaction: L-tryptophan + tetrahydrobiopterin + O2 = 5-hydroxy-L-tryptophan + 4-alpha-hydroxytetrahydrobiopterin + H2O.

Catalysis of the reaction: L-tyrosine + tetrahydrobiopterin + O2 = 3,4-dihydroxy-L-phenylalanine + 4-alpha-hydroxytetrahydrobiopterin + H2O.

Catalysis of the reaction: D-glucose 6-phosphate = 1D-myo-inositol 3-phosphate. This reaction requires NAD, which dehydrogenates the CHOH group to CO at C-5 of the glucose 6-phosphate, making C-6 into an active methylene, able to condense with the aldehyde at C-1. Finally, the enzyme-bound NADH reconverts C-5 into the CHOH form.

Catalysis of the reaction: CMP-N-acetylneuraminate + beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminyl-1,3-beta-D-galactosyl-1,4-beta-D-glucosylceramide = CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminyl-1,3-beta-D-galactosyl-1,4-D-glucosylceramide.

Catalysis of the transfer of sialic acid to an acceptor molecule, typically the terminal portions of the sialylated glycolipids (gangliosides) or to the N- or O-linked sugar chains of glycoproteins.