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  • 1
    ISSN: 1617-4623
    Schlagwort(e): β tubulin genes ; Drosophila ; Mesoderm ; Neural system ; Oogenesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary In Drosophila β tubulins are encoded by a small gene family and the four members of this family are differentially expressed. mRNAs transcribed from two of these genes, namely the β1 and β3 tubulin genes, are abundant during embryogenesis. While the β1 tubulin gene is constitutively expressed during development, β3 mRNA is restricted to two distinct phases: mid embryogenesis and metamorphosis. The transcription initiation sites are identical in both these stages and comparison of presumptive promoter regions reveals no extensive homologies between the genes. In situ localization shows β1 tubulin mRNA to be maternally expressed in the nurse cells of the egg chambers and evenly distributed during early embryogenesis. In contrast, during later stages of embryogenesis β1 tubulin transcripts are predominantly expressed in neural derivatives. The β3 tubulin gene expression is also spatially regulated, β3 mRNA being restricted to the mesoderm.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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