Predicted to enable estrogen receptor binding activity and histone kinase activity (H2A-T120 specific). Involved in B cell differentiation and V(D)J recombination. Predicted to be located in fibrillar center and nucleoplasm. Predicted to be part of COP9 signalosome and Cul4-RING E3 ubiquitin ligase complex. Predicted to be active in nucleus. Orthologous to human DCAF1 (DDB1 and CUL4 associated factor 1). [provided by Alliance of Genome Resources, Apr 2022]