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 subtype 2; Fibronectin type III domain; Immunoglobulin-like domain superfamily; and Fibronectin type III superfamily. Is an ortholog of C. elegans unc-22. In C. elegans, unc-22 is involved in several processes, including adult behavior; positive regulation of sarcomere organization; and positive regulation of striated muscle contraction.