Predicted to be involved in DNA double-strand break attachment to nuclear envelope; double-strand break repair via nonhomologous end joining; and protein localization to site of double-strand break. Predicted to be located in nuclear matrix; nucleoplasm; and site of double-strand break. Is expressed in diaphragm; embryo mesenchyme; and musculature. Orthologous to human IFFO1 (intermediate filament family orphan 1). [provided by Alliance of Genome Resources, Apr 2022]