Figure 2.
PIF3 binding motif localization upstream of PAP and SIG genes and expression of SIG in photoreceptor mutants. In (a) individual positions of G-box (CACGTG) and PBE-box (CACATG) binding motifs 3 kb upstream from ATG (upper) and a histogram of the motif positions (lower). (b) Expression after light induction of SIG2 (left column) and SIG6 (right column) in WT (red circle symbols) and cry1cry2, phyA and phyB mutants (orange square symbols). 5-day old dark grown seedlings were exposed to light and sampled for RNA-extraction.