Is predicted to encode a protein with the following domains: Immunoglobulin-like fold; Concanavalin A-like lectin/glucanase domain superfamily; B30.2/SPRY domain superfamily; and SPRY domain. 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.