A targeting vector was designed with an SV40 splice acceptor, a loxP-flanked STOP cassette (PGK-neo and triple SV40 transcriptional termination sequence), a cDNA encoding the 119 amino acid C-terminal truncation of human alpha-synuclein associated with familial Parkinson's disease (Syn119 or SynCT119; encoding amino acids 1-119 of the full length protein), and a bovine polyadenylation signal. (J:147331, J:150777)