Palmitoyltransferase ZDHHC3 is an enzyme that in humans is encoded by the ZDHHC3 gene that contains a DHHC domain.

Function: Palmitoyltransferase with broad specificity. Palmitoylates GABA receptors on their gamma subunit (GABRG1, GABRG2 and GABRG3), which regulates synaptic clustering and/or cell surface stability. Palmitoylates glutamate receptors GRIA1 and GRIA2, which leads to their retention in Golgi (By similarity).