Is predicted to encode a protein with the following domains: Dbl homology (DH) domain superfamily; Pleckstrin homology domain; and PH-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.