Is predicted to encode a protein with the following domains: Immunoglobulin I-set domain; Immunoglobulin I-set; Immunoglobulin subtype; Immunoglobulin-like fold; Immunoglobulin subtype 2; and Immunoglobulin-like domain superfamily. Is an ortholog of C. elegans unc-89. In C. elegans, unc-89 is involved in several processes, including myofibril assembly; nematode pharyngeal gland morphogenesis; and regulation of striated muscle contraction.