Abstract
The target of rapamycin (TOR), a central controller of cell growth, is found in two distinct, highly conserved multiprotein complexes. Three recent papers in Cell (Jacinto et al., 2006), Developmental Cell (shiota et al., 2006; this issue), and Current Biology (Frias et al., 2006) shed light on mTOR complex 2 (mTORC2) composition and in vivo function. An important new finding is that mTORC2 determines Akt/PKB substrate specificity rather than absolute activity.
MeSH terms
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Adaptor Proteins, Signal Transducing / metabolism*
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Adenosine Triphosphatases / metabolism
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Animals
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Fungal Proteins / metabolism
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Humans
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Protein Kinases / analysis
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Protein Kinases / metabolism*
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Proto-Oncogene Proteins c-akt / metabolism*
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Saccharomyces cerevisiae Proteins
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Substrate Specificity
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TOR Serine-Threonine Kinases
Substances
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Adaptor Proteins, Signal Transducing
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Fungal Proteins
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MAPKAP1 protein, human
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SAP1 protein, S cerevisiae
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Saccharomyces cerevisiae Proteins
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Protein Kinases
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MTOR protein, human
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Proto-Oncogene Proteins c-akt
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TOR Serine-Threonine Kinases
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Adenosine Triphosphatases