Related target enhancers for dorsal and NF-kappa B signaling pathways.
Drosophila dorsoventral (DV) patterning and mammalian hematopoiesis are regulated by related signaling pathways (Toll, interleukin-1) and transcription factors (dorsal, nuclear factor-kappa B). These factors interact with related enhancers, such as the rhomboid NEE and kappa light chain enhancer, that contain similar arrangements of activator and repressor binding sites. It is shown that the kappa enhancer can generate lateral stripes of gene expression in transgenic Drosophila embryos in a pattern similar to that directed by the rhomboid NEE. Drosophila DV determinants direct these stripes through the corresponding mammalian cis regulatory elements in the kappa enhancer, including the kappa B site and kappa E boxes. These results suggest that enhancers can couple conserved signaling pathways to divergent gene functions.
González-Crespo
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S
Department of Biology, University of California at San Diego, La Jolla 92093-0322.
Levine
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M
D000818:Animals; D030801:Animals, Genetically Modified; D001483:Base Sequence; D004330:Drosophila / Q000196:embryology / Q000235:genetics*; D029721:Drosophila Proteins; D004475:Ectoderm / Q000378:metabolism; D004742:Enhancer Elements, Genetic; D019204:GTP-Binding Proteins / Q000235:genetics; D017344:Genes, Insect; D018257:Helix-Loop-Helix Motifs; D008648:Mesoderm / Q000378:metabolism; D008969:Molecular Sequence Data; D016328:NF-kappa B / Q000235:genetics / Q000378:metabolism*; D009687:Nuclear Proteins / Q000235:genetics / Q000378:metabolism*; D010750:Phosphoproteins / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism; D014170:Transformation, Genetic
D029721:Drosophila Proteins; D016328:NF-kappa B; D009687:Nuclear Proteins; D010750:Phosphoproteins; D014157:Transcription Factors; C062236:dl protein, Drosophila; D019204:GTP-Binding Proteins