Palmitoyltransferase specific for casein kinase 1. Palmitoylates isoforms YCK1 and YCK2 at both C-terminal cysteine residues, which is required for their proper plasma membrane localization. Required for constitutive endocytosis of a-factor receptor STE3 and both constitutive and pheromone-induced endocytosis of alpha-factor receptor STE2. hexadecanoyl-CoA + L-cysteinyl-[protein] = CoA + S-hexadecanoyl-L-cysteinyl-[protein] The DHHC domain is required for palmitoyltransferase activity. Present with 4072 molecules/cell in log phase SD medium. Belongs to the DHHC palmitoyltransferase family. AKR/ZDHHC17 subfamily.