Predicted to enable DNA polymerase binding activity; molecular adaptor activity; and protein homodimerization activity. Predicted to be involved in double-strand break repair via nonhomologous end joining. Predicted to be located in nucleoplasm. Predicted to be part of nonhomologous end joining complex. Predicted to be active in nucleus and site of double-strand break. Orthologous to human PAXX (PAXX non-homologous end joining factor). [provided by Alliance of Genome Resources, Apr 2022]