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Citation
Chen, , Marinissen, M.J., Oh, S.W., Chen, X., Melnick, M., Perrimon, N., Gutkind, J.S., Hou, S.X. (2002). CKA, a novel multidomain protein, regulates the JUN N-terminal kinase signal transduction pathway in Drosophila.  Mol. Cell. Biol. 22(6): 1792--1803.
FlyBase ID
FBrf0145123
Publication Type
Research paper
Abstract

The Drosophila melanogaster JUN N-terminal kinase (DJNK) and DPP (decapentaplegic) signal transduction pathways coordinately regulate epithelial cell sheet movement during the process of dorsal closure in the embryo. By a genetic screen of mutations affecting dorsal closure in Drosophila, we have now identified a multidomain protein, connector of kinase to AP-1 (cka), that functions in the DJNK pathway and controls the localized expression of dpp in the leading-edge cells. We have also investigated how CKA acts. This unique molecule forms a complex with HEP (DJNKK), BSK (DJNK), DJUN, and DFOS. Complex formation activates BSK kinase, which in turn phosphorylates and activates DJUN and DFOS. These data suggest that CKA represents a novel molecule regulating AP-1 activity by organizing a molecular complex of kinases and transcription factors, thus coordinating the spatial-temporal expression of AP-1-regulated genes.

PubMed ID
PubMed Central ID
PMC135602 (PMC) (EuropePMC)
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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Mol. Cell. Biol.
    Title
    Molecular and Cellular Biology
    Publication Year
    1981-
    ISBN/ISSN
    0270-7306
    Data From Reference
    Alleles (13)
    Genes (11)
    Physical Interactions (6)
    Insertions (1)
    Transgenic Constructs (5)