The ciD mutation encodes a chimeric protein whose activity is regulated by Wingless signaling.

Abstract excerpt

The Drosophila cubitus interruptus (ci) gene encodes a sequence-specific DNA-binding protein that regulates transcription of Hedgehog (Hh) target genes. Activity of the Ci protein is posttranslationally regulated by Hh signaling. In animals homozygous for the ciD mutation, however, transcription of Hh target genes is regulated by Wingless (Wg) signaling rather than by Hh signaling. We show that ciD encodes a...

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