Plays a role in the removal of cohesin from kinetochores on mitotic chromosomes and is required for centromere resolution. RNAi-mediated knockdown leads to impaired removal of the cohesin component scc-1 from kinetochores on mitotic metaphase chromosomes. Belongs to the type II topoisomerase family. Lacks the conserved ATP binding sites, the conserved active site tyrosine at position 404, the conserved isoleucine at position 455 important for DNA bending, and the conserved magnesium binding site at position 143, and therefore probably lacks topoisomerase activity.