275 bp

FIGURE 17-3 The regulatory sequences of the yeast CAL1 gene. The UAS(-, (Upstream Activating Sequence for GAL) contains 4 binding sites, each of which binds a dimer of Gai-4 as shonwi in Figure 17-2. Though not shown here, there is another site between these and the GAL I gene that binds a repressor called Migl, which we will hear about later "m the chapter (see Figure 17-70)

Conserved MOchanigms of Transcriptional Regulation from Yeast to Mammals

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