Predicted to enable DNA topoisomerase type I (single strand cut, ATP-independent) activity and single-stranded DNA binding activity. Predicted to be involved in DNA topological change; chromosome separation; and mitochondrial DNA metabolic process. Predicted to be located in PML body. Predicted to be active in nucleus. Is expressed in several structures, including adrenal gland; cardiovascular system; genitourinary system; gut; and nervous system. Human ortholog(s) of this gene implicated in autosomal recessive progressive external ophthalmoplegia with mitochondrial DNA deletions 5. Orthologous to human TOP3A (DNA topoisomerase III alpha). [provided by Alliance of Genome Resources, Apr 2022]