Predicted to enable cullin family protein binding activity; ubiquitin protein ligase binding activity; and ubiquitin-like protein ligase activity. Predicted to contribute to ubiquitin-protein transferase activity. Involved in SCF-dependent proteasomal ubiquitin-dependent protein catabolic process and protein ubiquitination. Acts upstream of or within protein K48-linked ubiquitination; protein catabolic process; and protein monoubiquitination. Located in cytosol. Part of SCF ubiquitin ligase complex. Is expressed in several structures, including genitourinary system. Orthologous to human RBX1 (ring-box 1). [provided by Alliance of Genome Resources, Apr 2022]