Is predicted to encode a protein with the following domains: Fibronectin type III; Immunoglobulin-like fold; Fibronectin type III domain; Immunoglobulin-like domain superfamily; and Fibronectin type III superfamily. Is an ortholog of C. elegans lad-2. In C. elegans, lad-2 is involved in anterior/posterior axon guidance; dorsal/ventral axon guidance; and regulation of axon guidance.