[[SWI/SNF]](SWItch/Sucrose Non-Fermentable), is a [[nucleosome]] remodeling complex found in both eukaryotes and prokaryotes. In simpler terms, it is a group of proteins that associate to remodel the way DNA is packaged. It is composed of several proteins – products of the [[SWI]] and [[SNF]] genes (SWI1, SWI2/SNF2, SWI3, SWI5, SWI6) as well as other polypeptides.