passages.id: split_7_validation_43_passage
passages.type: progene_text
passages.text: Adipocyte differentiation of nontransformed cells also markedly represses the ability of SRF to bind to the junB SRE , the c-fos SRE , and other SREs , as determined by mobility shift and gel supershift assays , without affecting the DNA binding characteristics of the nuclear protein SP-1 .