Predicted to enable ubiquitin protein ligase binding activity and ubiquitin-protein transferase activity. Predicted to be involved in several processes, including cellular protein metabolic process; in utero embryonic development; and ribosome biogenesis. Predicted to act upstream of or within several processes, including negative regulation of granulocyte differentiation; positive regulation of G1/S transition of mitotic cell cycle; and regulation of response to DNA damage stimulus. Predicted to be part of Cul4A-RING E3 ubiquitin ligase complex. Orthologous to human CUL4A (cullin 4A). [provided by Alliance of Genome Resources, Apr 2022]