OBSOLETE. Any leptin-mediated signaling pathway that is involved in negative regulation of appetite.

Any process that modulates the frequency, rate or extent of protein polyubiquitination.

Any process that stops, prevents or reduces the frequency, rate or extent of protein polyubiquitination.

Any process that modulates the frequency, rate or extent of histone exchange.

Catalysis of the reaction: O3-acetyl-L-serine + uracil = 3-(uracil-1-yl)-L-alanine + acetate.

Catalysis of the reaction: dihydrozeatin + NADP(+) = H(+) + NADPH + zeatin.

Catalysis of the reaction: arachidonate + O2 = (5Z,8Z,11Z,13E)-(15S)-15-hydroperoxyicosa-5,8,11,13-tetraenoate.

Catalysis of the reaction: 4-(2-aminoethyl)benzene-1,2-diol + 4-hydroxyphenylacetaldehyde = (S)-norcoclaurine + H2O.

Catalysis of the reaction: trimethylamine + H2O + electron-transferring flavoprotein = dimethylamine + formaldehyde + reduced electron-transferring flavoprotein.

Catalysis of an oxidation-reduction (redox) reaction in which a CH-NH group acts as a hydrogen or electron donor and reduces a flavin.

Catalysis of the reaction: 1-alkyl-sn-glycerol + O2 + (tetrahydrobiopterin/tetrahydropteridine) = 1-hydroxyalkyl-sn-glycerol + H2O + (dihydrobiopterin/dihydropteridine).

Catalysis of the reaction: H2O + acetylenedicarboxylate = CO2 + pyruvate.

Catalysis of the reaction: H2O + N6-acyl-L-lysine = L-lysine + a carboxylate.

OBSOLETE. Catalysis of the reaction: 5,6,7,8-tetrahydrobiopterin + anthranilate + O(2) = 3-hydroxyanthranilate + 7,8-dihydrobiopterin + H(2)O.

Any process that stops, prevents or reduces the frequency, rate or extent of histone exchange.

Any process that activates or increases the frequency, rate or extent of histone exchange.

Any process that stops, prevents or reduces the frequency, rate or extent of retinoic acid biosynthetic process.

Any process that stops, prevents or reduces the frequency, rate or extent of penicillin biosynthetic process.