Predicted to enable protein kinase binding activity; single-stranded DNA binding activity; and ubiquitin protein ligase activity. Predicted to be involved in DNA double-strand break processing involved in repair via single-strand annealing; double-strand break repair via homologous recombination; and protein ubiquitination. Predicted to be active in site of double-strand break. Orthologous to human RNF138 (ring finger protein 138). [provided by Alliance of Genome Resources, Apr 2022]