May be involved in protein transport from Golgi to cell surface. The ZDHHC9-GOLGA7 complex is a palmitoyltransferase specific for HRAS and NRAS. Interacts with GOLGA3. Interacts with ZDHHC9. Expressed in all tissues except colon and thymus. Palmitoylated on Cys-69 and Cys-72; which is required for Golgi localization and interaction with GOLGA3. Belongs to the ERF4 family.