gamma-SynucleinSynucleinsalpha-Synucleinbeta-SynucleinImpulse Control DisordersParkinson DiseaseDopamineProtein D-Aspartate-L-Isoaspartate MethyltransferaseLewy BodiesNerve Tissue ProteinsParkinsonian DisordersNeurodegenerative DiseasesMolecular Sequence DataNeuronsAmino Acid SequenceBrainMice, Transgenic