Enables tumor necrosis factor receptor binding activity. Predicted to be involved in several processes, including mitotic G2 DNA damage checkpoint signaling; positive regulation of DNA repair; and response to ionizing radiation. Predicted to act upstream of or within several processes, including DNA repair; apoptotic process; and chromatin organization. Predicted to be located in cytosol and nucleus. Predicted to be part of BRCA1-A complex; BRISC complex; and nuclear ubiquitin ligase complex. Is expressed in central nervous system and retina. Orthologous to human BABAM2 (BRISC and BRCA1 A complex member 2). [provided by Alliance of Genome Resources, Apr 2022]