Is predicted to encode a protein with the following domains: PDZ superfamily; PDZ domain; P-loop containing nucleoside triphosphate hydrolase; Guanylate kinase; Guanylate kinase/L-type calcium channel beta subunit; and ZU5 domain. Is an ortholog of C. elegans zoo-1. In C. elegans, zoo-1 is involved in actin filament organization; embryo development; and embryonic morphogenesis.