The invention is based on the discovery of a novel neuroprotective peptide. In addition, the invention rests on the discovery that the NAP peptide enhances the association of tau and the brain-specific beta tubulin subunit. In addition, NAP modifies microtubule assembly and dynamics, in part, by affecting the tyrosination of microtubule proteins. The invention provides compositions and methods for treatment and prevention of neuronal disorders, including NAP-binding and tau-binding agents, tau peptide mimetics, NAP-like and NAP-like tau peptide mimetics.
