Enables DNA binding activity. Involved in cellular response to osmotic stress. Located in nucleus. Used to study kidney disease; muscular atrophy; and ureteral obstruction. Biomarker of prediabetes syndrome. Human ortholog(s) of this gene implicated in breast cancer and immunodeficiency 53. Orthologous to human RELB (RELB proto-oncogene, NF-kB subunit). [provided by Alliance of Genome Resources, Apr 2022]