Predicted to enable lipid binding activity. Involved in several processes, including negative regulation of axon extension; regulation of oviposition; and regulation of pharyngeal pumping. Located in axon. Expressed in several structures, including body wall musculature; ganglia; neurons; seam cell; and somatic nervous system. Human ortholog(s) of this gene implicated in immunodeficiency 13. Is an ortholog of human UNC119 (unc-119
lipid binding chaperone) and UNC119B (unc-119
lipid binding chaperone B).