Our cells perform a marvel of engineering when it comes to packing information into small spaces. Every time a cell divides, it bundles up an amazing 4 meters of DNA into 46 tiny packages, each of which is only several millionths of a meter in length. Researchers from EMBL Heidelberg and the Julius-Maximilians-Universität Würzburg have now discovered how a family of DNA motor proteins succeeds in packaging loosely arranged strands of DNA into compact individual chromosomes during cell division.
source https://www.lifetechnology.com/blogs/life-technology-science-news/uncovering-the-inner-workings-of-the-molecular-machinery-that-shapes-chromosomes-during-cell-division