Predicted to enable protein-macromolecule adaptor activity and ubiquitin protein ligase binding activity. Involved in several processes, including anaphase-promoting complex-dependent catabolic process; positive regulation of metaphase/anaphase transition of meiotic cell cycle; and reproductive process. Located in cytoplasm and nucleus. Part of Cul2-RING ubiquitin ligase complex. Expressed in several structures, including P1; P12; P2; germ line; and nerve ring. Is an ortholog of human CUL2 (cullin 2).