Is predicted to encode a protein with the following domains: Immunoglobulin I-set domain; Immunoglobulin I-set; Immunoglobulin subtype; Fibronectin type III; Immunoglobulin-like fold; Immunoglobulin domain; Immunoglobulin subtype 2; Fibronectin type III domain; Immunoglobulin-like domain superfamily; and Fibronectin type III superfamily. Is an ortholog of C. elegans rig-4.