Predicted to enable several functions, including protein kinase C binding activity; protein sequestering activity; and ubiquitin binding activity. Involved in positive regulation of I-kappaB kinase/NF-kappaB signaling; positive regulation of NIK/NF-kappaB signaling; and positive regulation of apoptotic process. Acts upstream of or within negative regulation of necroptotic process and positive regulation of extrinsic apoptotic signaling pathway. Predicted to be part of LUBAC complex. Is expressed in central nervous system and retina. Human ortholog(s) of this gene implicated in glycogen storage disease. Orthologous to human RBCK1 (RANBP2-type and C3HC4-type zinc finger containing 1). [provided by Alliance of Genome Resources, Apr 2022]