ATP-dependent DNA helicase important for chromosome transmission and normal cell cycle progression in G(2)/M (By similarity). May have a role in changing DNA topology to allow the loading of proteins involved in maintaining sister chromatid cohesion in the vicinity of the centromeres (By similarity). Has a specific role in chromosome segregation during meiosis II (By similarity). ATP + H2O = ADP + H(+) + phosphate Belongs to the DEAD box helicase family. DEAH subfamily. DDX11/CHL1 sub-subfamily.