Is predicted to encode a protein with the following domains: Immunoglobulin I-set domain; Fibronectin type III; Immunoglobulin subtype; Fibronectin type III domain; Immunoglobulin-like domain superfamily; Immunoglobulin I-set; Immunoglobulin domain; Immunoglobulin subtype 2; Immunoglobulin-like fold; and Fibronectin type III superfamily. Is an ortholog of C. elegans unc-40. In C. elegans, unc-40 is involved in several processes, including axon guidance; regulation of locomotion; and sex differentiation.