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- W2950167983 abstract "The timing of Drosophila egg chamber development is controlled by a germline Delta signal that activates Notch in the follicle cells to induce them to cease proliferation and differentiate. Here we report that follicle cells lacking the RNA-binding protein IMP go through one extra division due to a delay in the Delta-dependent S2 cleavage of Notch. The timing of Notch activation has previously been shown to be controlled by cis-inhibition by Delta in the follicle cells, which is relieved when the miRNA pathway represses Delta expression. imp mutants are epistatic to Delta mutants and give an additive phenotype with belle and dicer mutants, indicating that IMP functions independently of both cis-inhibition and the miRNA pathway. We find that the imp phenotype is rescued by over-expression of Kuzbanian, the metalloprotease that mediates the Notch S2 cleavage. Furthermore, Kuzbanian is not enriched at the apical membrane in imp mutants, accumulating instead in late endosomes. Thus, IMP regulates Notch signalling by controlling the localisation of Kuzbanian to the apical domain, where Notch cleavage occurs, revealing a novel regulatory step in the Notch pathway." @default.
- W2950167983 created "2019-06-27" @default.
- W2950167983 creator A5017726721 @default.
- W2950167983 creator A5027640574 @default.
- W2950167983 creator A5042234587 @default.
- W2950167983 date "2019-01-01" @default.
- W2950167983 modified "2023-09-27" @default.
- W2950167983 title "<i>Drosophila</i>IMP regulates Kuzbanian to control the timing of Notch signalling in the follicle cells" @default.
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- W2950167983 doi "https://doi.org/10.1242/dev.168963" @default.
- W2950167983 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6361131" @default.
- W2950167983 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30635283" @default.
- W2950167983 hasPublicationYear "2019" @default.
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