Is predicted to encode a protein with the following domains: PH-like domain superfamily; NUMB domain; Numb/numb-like; PTB/PI domain; and Phosphotyrosine interaction domain (PTB/PID). Is an ortholog of C. elegans num-1. In C. elegans, num-1 is involved in endocytic recycling; phospholipid transport; and protein targeting to membrane.