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PMID:11740943
Citation |
Jin, J, Anthopoulos, N, Wetsch, B, Binari, RC, Isaac, DD, Andrew, DJ, Woodgett, JR and Manoukian, AS (2001) Regulation of Drosophila tracheal system development by protein kinase B. Dev. Cell 1:817-27 |
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Abstract |
Protein kinase B (PKB, also termed Akt) is a phosphatidylinositol 3' kinase (PI3'K)-dependent enzyme implicated in survival signaling and human tumorigenesis. To identify potential targets of this protein kinase, we employed a genetic screen in Drosophila. Among several genes that genetically interacted with PKB was trachealess (trh), which encodes a bHLH-PAS domain transcription factor required for development of the trachea and other tubular organs. Trh activates expression of the fibroblast growth factor receptor Breathless, which, in turn, is required for directed migration of all tracheal branches. Using a combination of biochemical and transgenic approaches, we show that direct phosphorylation of Trh by PKB at serine 665 is essential for nuclear localization and functional activation of this regulator of branching morphogenesis. |
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Keywords |
Active Transport, Cell Nucleus/physiology; Animals; Cell Line; Drosophila Proteins; Drosophila melanogaster/embryology; Drosophila melanogaster/genetics; Drosophila melanogaster/physiology; Female; Genes, Reporter; Humans; Male; Morphogenesis/physiology; Peptide Mapping; Phosphatidylinositol 3-Kinases/metabolism; Phosphorylation; Precipitin Tests; Protein-Serine-Threonine Kinases; Proto-Oncogene Proteins/genetics; Proto-Oncogene Proteins/metabolism; Proto-Oncogene Proteins c-akt; Recombinant Fusion Proteins/metabolism; Signal Transduction; Trachea/anatomy & histology; Trachea/growth & development; Transcription Factors/genetics; Transcription Factors/metabolism |
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Significance
Annotations
Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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See also
References
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