Is predicted to encode a protein with the following domains: Fibronectin type III superfamily; Fibronectin type III domain; Immunoglobulin-like fold; SPRY domain; B-box, C-terminal; Fibronectin type III; and Concanavalin A-like lectin/glucanase domain superfamily. Is an ortholog of C. elegans madd-2. In C. elegans, madd-2 is involved in cell projection organization; protein ubiquitination; and regulation of protein localization.