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Nuclear/cytoplasmic localization of Akt activity in the cell cycle

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Summary.

The serine/threonine protein kinase Akt (also known as PKB) is a proto-oncogene and one of the most frequently hyperactivated kinases in human cancer. Its activation downstream of growth-factor-stimulated phosphatidylinositide-3′-OH kinase activity plays a role in the control of cell cycle, cell growth, apoptosis and cell energy metabolism. Akt phosphorylates some thousand downstream substrates, including typical cytoplasmic as well as nuclear proteins. Accordingly, it is not surprising that Akt activity can be found in both, the cytoplasm and the nucleus. Here we report the cell cycle regulation of nuclear and cytoplasmic Akt activity in mammalian cells. These data provide new insights into the regulation of Akt activity and have implications for future studies on the regulation of the wide variety of different nuclear and cytoplasmic Akt substrates.

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Authors and Affiliations

  1. Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria

    M. Rosner, M. Hanneder, A. Freilinger & M. Hengstschläger

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  1. M. Rosner
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  2. M. Hanneder
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  3. A. Freilinger
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  4. M. Hengstschläger
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Rosner, M., Hanneder, M., Freilinger, A. et al. Nuclear/cytoplasmic localization of Akt activity in the cell cycle. Amino Acids 32, 341–345 (2007). https://doi.org/10.1007/s00726-007-0509-0

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  • DOI: https://doi.org/10.1007/s00726-007-0509-0

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