Is predicted to encode a protein with the following domains: PDZ superfamily; PDZ domain 6; MAGUK p55 subfamily member 5-like; PDZ domain; P-loop containing nucleoside triphosphate hydrolase; Guanylate kinase; SH3-like domain superfamily; SH3 domain; and Guanylate kinase/L-type calcium channel beta subunit. Is an ortholog of C. elegans magu-2.