Is predicted to encode a protein with the following domains: Winged helix DNA-binding domain superfamily; Cullin homology domain superfamily; Cullin protein, neddylation domain; Cullin protein neddylation domain; and Winged helix-like DNA-binding domain superfamily. Is an ortholog of C. elegans cul-1 and cul-6. In C. elegans, cul-1 is involved in several processes, including determination of adult lifespan; negative regulation of cell cycle; and regulation of apoptotic process.