Figure 1.

Nucleotide sequence of the tobacco RNR1a promoter. A –1151pb DNA fragment upstream from the ATG was amplified by IPCR. The subcloned sequence tested for promoter activity in our experiments is delimited by stars. Putative E2F elements are boxed, the distal dE2F/CDE composite element as well as the proximal pE2F element are indicated. A putative CHR box is in italic, potential Myb and telo elements are in bold characters and a potential TATA box is framed. Orientation of the various cis-elements is indicated by horizontal arrows. Putative SAR elements are underlined.