Contributes to double-stranded DNA binding activity. Involved in several processes, including cellular hyperosmotic salinity response; cellular response to X-ray; and cellular response to fatty acid. Located in cytoplasm and nucleus. Part of protein-containing complex. Human ortholog(s) of this gene implicated in chronic obstructive pulmonary disease and multiple myeloma. Orthologous to human XRCC5 (X-ray repair cross complementing 5). [provided by Alliance of Genome Resources, Apr 2022]