Enables ubiquitin protein ligase activity. Involved in negative regulation of interferon-beta production and protein ubiquitination. Acts upstream of or within negative regulation of NF-kappaB transcription factor activity and signal transduction. Predicted to be located in nucleolus; nucleoplasm; and site of DNA damage. Is expressed in several structures, including central nervous system; genitourinary system; liver; retina layer; and spleen. Human ortholog(s) of this gene implicated in Seckel syndrome 9. Orthologous to human TRAIP (TRAF interacting protein). [provided by Alliance of Genome Resources, Apr 2022]