Updated publication reference for PubMed record(s): 32747783. Using affinity purification determine changes in SS18 BAF complex upon fusion to SSX1. Using soluble nuclear fraction (nuclear extract NE) and nuclease digested chromatin fraction (CHR) we performed affinity capture of proteins bound to wild type SS18 and synovial sarcoma SS18-SSX1 fusion from NE and CHR of 293T cells.