tokens: In this study , we identified Sp1 and Sp3 as major factors binding to the Sp1 sites of the p21 / WAF1/Cip1 promoter in MG63 cells through electrophoretic mobility shift assays and showed that TSA treatment did not change their binding activities .
folded_tokens: in this study , we identify sp1 and sp3 as major factor bind to the sp1 site of the p21 / waf1/cip1 promoter in mg63 cell through electrophoretic mobility shift assay and show that tsa treatment do not change they binding activity .