Myristoyl-binding protein that acts as a cargo adapter: specifically binds the myristoyl moiety of a subset of N-terminally myristoylated proteins and is required for their localization. Plays a key role in ciliary membrane localization of proteins. Required for the establishment or function of the nervous system. Predominantly neuron-specific. Adopts an immunoglobulin-like beta-sandwich fold forming a hydrophobic cavity that capture N-terminally myristoylated target peptides. Phe residues within the hydrophobic beta sandwich are required for myristate binding (By similarity). Worms exhibit diverse nervous system defects including defects in feeding behavior and chemosensation. Phenotypes are due to defects in protein trafficking, such as mislocalization of odr-3 and gpa-13 proteins in olfactory neurons. Belongs to the PDE6D/unc-119 family.