Immunogen sequence: KGEAKLLKDG KVFRVVRENC WDPEVRIREM DQKGVTVQAL STVPVMFSYW AKPEDTLNLC QLLNNDLAST VVSYPRRFVG LGTLPMQAPE LAVKEMERCV KELGFPGVQI GTHVNEWDLN AQELFPVYAA AERLKCSLFV HPW. The neuronal excitotoxin quinolinate is an intermediate in the de novo synt