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Citation
Robertson, L.K., Bowling, D.B., Mahaffey, J.P., Imiolczyk, B., Mahaffey, J.W. (2004). An interactive network of zinc-finger proteins contributes to regionalization of the Drosophila embryo and establishes the domains of HOM-C protein function.  Development 131(12): 2781--2789.
FlyBase ID
FBrf0179413
Publication Type
Research paper
Abstract

During animal development, the HOM-C/HOX proteins direct axial patterning by regulating region-specific expression of downstream target genes. Though much is known about these pathways, significant questions remain regarding the mechanisms of specific target gene recognition and regulation, and the role of co-factors. From our studies of the gnathal and trunk-specification proteins Disconnected (DISCO) and Teashirt (TSH), respectively, we present evidence for a network of zinc-finger transcription factors that regionalize the Drosophila embryo. Not only do these proteins establish specific regions within the embryo, but their distribution also establishes where specific HOM-C proteins can function. In this manner, these factors function in parallel to the HOM-C proteins during axial specification. We also show that in tsh mutants, disco is expressed in the trunk segments, probably explaining the partial trunk to head transformation reported in these mutants, but more importantly demonstrating interactions between members of this regionalization network. We conclude that a combination of regionalizing factors, in concert with the HOM-C proteins, promotes the specification of individual segment identity.

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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Development
    Title
    Development
    Publication Year
    1987-
    ISBN/ISSN
    0950-1991
    Data From Reference
    Aberrations (1)
    Alleles (6)
    Genes (13)
    Transgenic Constructs (5)