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The mammalian SWI/SNF complex is a family of an estimated ∼100 complexes, each with different combinations of related subunits. Efforts in sequencing many cancer genomes has revealed that mammalian SWI/SNF complexes is one of the most frequently mutated epigenetic factors found in a broad range of cancers. In order to understand more about the subunit organization of SWI/SNF and because yeast and mammalian SWI/SNF complexes share many conserved subunits and domains; we have studied the role of the Snf5 subunit in the yeast SWI/SNF to better understand the role of the mammalian homolog SNF5 that is a known tumor suppressor gene. The basis for the loss of mammalian SNF5 being a driver mutation in pediatric rhabdoid tumors is currently not well understood or how the loss of SNF5 effects the composition, recruitment and nucleosome remodeling activity of the SWI/SNF complex. We …