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A dual role for CgYap5 in iron excess and iron starvation. In iron excess (Left Panel), CgYap5 induces an iron stress response which is very similar to what was described in S. cerevisiae. In iron starvation (Right Panel), CgYap5 represses GRX4 expression and may indirectly contribute to the induction of iron uptake genes by the Aft1/2 transcription factors.
