- Palmitoyl protein thioesterase (PPT) localizes into synaptosomes and synaptic vesicles in neurons: implications for infantile neuronal ceroid lipofuscinosis (INCL). Lehtovirta, M., Kyttälä, A., Eskelinen, E.L., Hess, M., Heinonen, O., Jalanko, A. Hum. Mol. Genet. (2001)