tokens: Thus , the induction of E2F binding to the E2F-1 promoter by the E4-6 / 7 protein observed in vitro correlates with transactivation of E2F-1 promoter activity in vivo .
folded_tokens: thus , the induction of e2f binding to the e2f-1 promoter by the e4-6 / 7 protein observe in vitro correlate with transactivation of e2f-1 promoter activity in vivo .