| http://purl.uniprot.org/citations/21628596 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/21628596 | http://www.w3.org/2000/01/rdf-schema#comment | "Drosophila Homeodomain-interacting protein kinase (Hipk) has been shown to regulate in vivo, the stability of Armadillo, the transcriptional effector of Wingless signaling. The Wingless pathway culminates in the stabilization of Armadillo that, in the absence of signaling, is sequentially phosphorylated, polyubiquitinated and degraded. Loss-of-function clones for hipk result in reduced stabilized Armadillo, whereas overexpression of hipk elevates Armadillo levels to promote Wingless-responsive target gene expression. Here, we show that overexpression of hipk can suppress the effects of negative regulators of Armadillo to prevent its degradation in the wing imaginal disc. Hipk acts to stabilize Armadillo by impeding the function of the E3 ubiquitin ligase Skp1-Cul1-F-box (SCF)(Slimb), thereby inhibiting Armadillo ubiquitination and subsequent degradation. Vertebrate Hipk2 displays a similar ability to prevent β-catenin ubiquitination in a functionally conserved mechanism. We find that Hipk's ability to inhibit SCF(Slimb)-mediated ubiquitination is not restricted to Armadillo and extends to other substrates of SCF(Slimb), including the Hedgehog signaling effector Ci. Thus, similar to casein kinase 1 and glycogen synthase kinase 3, Hipk dually regulates both Wingless and Hedgehog signaling by controlling the stability of their respective signaling effectors, but it is the first kinase to our knowledge identified that promotes the stability of both Armadillo and Ci."xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.org/dc/terms/identifier | "doi:10.1073/pnas.1017548108"xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/author | "Swarup S."xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/author | "Verheyen E.M."xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/date | "2011"xsd:gYear |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/name | "Proc Natl Acad Sci U S A"xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/pages | "9887-9892"xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/title | "Drosophila homeodomain-interacting protein kinase inhibits the Skp1-Cul1-F-box E3 ligase complex to dually promote Wingless and Hedgehog signaling."xsd:string |
| http://purl.uniprot.org/citations/21628596 | http://purl.uniprot.org/core/volume | "108"xsd:string |
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| http://purl.uniprot.org/uniprot/P54367#attribution-81E614AA31809064A2F35E9ACE27C33C | http://purl.uniprot.org/core/source | http://purl.uniprot.org/citations/21628596 |
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| http://purl.uniprot.org/uniprot/P18431#attribution-AF3865CD2256C34538FCCBDC147CB762 | http://purl.uniprot.org/core/source | http://purl.uniprot.org/citations/21628596 |
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