Predicted to enable protein kinase activity. Acts upstream of or within several processes, including epidermal growth factor receptor signaling pathway via I-kappaB kinase/NF-kappaB cascade; negative regulation of NIK/NF-kappaB signaling; and regulation of osteoclast differentiation. Located in cytoplasm and nucleus. Is expressed in central nervous system; heart valve; and urinary system. Orthologous to human RASSF2 (Ras association domain family member 2). [provided by Alliance of Genome Resources, Apr 2022]