|Other Names||F-box only protein 9, Cross-immune reaction antigen 1, Renal carcinoma antigen NY-REN-57, FBXO9, FBX9, VCIA1|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Function||Substrate recognition component of a SCF (SKP1-CUL1-F- box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of TTI1 and TELO2 in a CK2-dependent manner, thereby directly regulating mTOR signaling. SCF(FBXO9) recognizes and binds mTORC1-bound TTI1 and TELO2 when they are phosphorylated by CK2 following growth factor deprivation, leading to their degradation. In contrast, the SCF(FBXO9) does not mediate ubiquitination of TTI1 and TELO2 when they are part of the mTORC2 complex. As a consequence, mTORC1 is inactivated to restrain cell growth and protein translation, while mTORC2 is activated due to the relief of feedback inhibition by mTORC1.|
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This gene encodes a member of the F-box protein familywhich is characterized by an approximately 40 amino acid motif, theF-box. The F-box proteins constitute one of the four subunits ofthe ubiquitin protein ligase complex called SCFs(SKP1-cullin-F-box), which function in phosphorylation-dependentubiquitination. The F-box proteins are divided into 3 classes: Fbwscontaining WD-40 domains, Fbls containing leucine-rich repeats, andFbxs containing either different protein-protein interactionmodules or no recognizable motifs. The protein encoded by this genebelongs to the Fbxs class. Alternative splicing of this genegenerates at least 3 transcript variants diverging at the 5'terminus.
Jin, J., et al. Genes Dev. 18(21):2573-2580(2004)Mungall, A.J., et al. Nature 425(6960):805-811(2003)Scanlan, M.J., et al. Int. J. Cancer 83(4):456-464(1999)Winston, J.T., et al. Curr. Biol. 9(20):1180-1182(1999)Cenciarelli, C., et al. Curr. Biol. 9(20):1177-1179(1999)
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