we have replaced the uce of the mouse rdna promoter by three different pol ii activating sequences ( the yeast gal4 binding sites , the target sequence of the enhancer binding protein e2 from bovine papilloma virus type 1 and the octamer motif ) , and measured the template activity of these chimeric promoters in the presence of the trans-activating proteins either in a cell free transcription system or in vivo after transfection into mouse cells .
C0035679
pol ii
C0040649
transcription