Regulates the level of the neuromodulator D-serine in the brain. Has high activity towards D-DOPA and contributes to dopamine synthesis. Could act as a detoxifying agent which removes D-amino acids accumulated during aging. Acts on a variety of D-amino acids with a preference for those having small hydrophobic side chains followed by those bearing polar, aromatic, and basic groups. Does not act on acidic amino acids. a D-alpha-amino acid + H2O + O2 = a 2-oxocarboxylate + H2O2 + NH4(+) Homodimer. Belongs to the DAMOX/DASOX family.