complex PBAP, and was designated BAP170 (22). This complex is distinguished from the BAP SWI/SNF-like complex in part by its lack of Osa. This finding extends the role of ARID-containing subunits as components of SWI/SNF-related chromatin-remodeling complexes. Analysis of ARID2 in the DNA pull-down assay (Figure 4) indicates that it binds DNA without sequence specificity, like all other known ARID-containing components of SWI/SNF-related complexes.