Is predicted to encode a protein with the following domains: BTB/Kelch-associated; BTB/POZ domain; Kelch motif; Kelch-like protein 17/20; Galactose oxidase/kelch, beta-propeller; Kelch-type beta propeller; Kelch repeat type 1; and SKP1/BTB/POZ domain superfamily. Is an ortholog of C. elegans ivns-1.