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The hedgehog (Hh) signaling pathway plays a very important role in metazoan development by controlling pattern formation. Drosophila imaginal discs are subdivided into anterior and posterior compartments that derive from adjacent cell populations. The anterior/posterior (A/P) boundaries, which are critical to maintaining the position of organizers, are established by a complex mechanism involving Hh signaling. Here, we uncover the regulation of ptc in the Hh signaling pathway by two subunits of mediator complex, Kto and Skd, which can also regulate boundary location. Collectively, we provide further evidence that Kto-Skd affects the A/P-axial development of the whole wing disc. Kto can interact with Cubitus interruptus (Ci), bind to the Ci-binding region on ptc promoter, which are both regulated by Hh signals to down-regulate ptc expression. © 2014 by The American Society for Biochemistry and Molecular Biology, Inc.


Feifei Mao, Xiaofeng Yang, Lin Fu, Xiangdong Lv, Zhao Zhang, Wenqing Wu, Siqi Yang, Zhaocai Zhou, Lei Zhang, Yun Zhao. The Kto-Skd complex can regulate ptc expression by interacting with Cubitus interruptus (Ci) in the Hedgehog signaling pathway. The Journal of biological chemistry. 2014 Aug 08;289(32):22333-41

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PMID: 24962581

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