Play a role in cell adhesion by regulating the plasma membrane localization of the palmitoyltransferase ZDHHC5 (PubMed:31402609). May be involved in protein transport from Golgi to cell surface. Expressed in brain, but not in lung, nor chondrocytes. Palmitoylated by ZDHHC5. Palmitoylation is required for the maintenance of ZDHHC5 at the plasma membrane. Shares an exon with the neighboring tail-to-tail oriented gene CRTAC1. Belongs to the ERF4 family.