mTORC1 Phosphorylates the ULK1-mAtg13-FIP200 Autophagy Regulatory Complex
2009; American Association for the Advancement of Science; Volume: 2; Issue: 84 Linguagem: Inglês
10.1126/scisignal.284pe51
ISSN1937-9145
Autores Tópico(s)Polyamine Metabolism and Applications
ResumoHigh nutrient availability stimulates the mammalian target of rapamycin complex 1 (mTORC1) to coordinately activate anabolic processes, such as protein synthesis, while inhibiting the cellular catabolism of autophagy. Positive regulation of protein synthesis through the mTORC1 substrates p70 ribosomal S6 kinase (p70S6K) and eukaryotic initiation factor 4E binding protein 1 (4E-BP1) has been well characterized. The complementary inhibitory mechanism in which mTORC1 phosphorylates the autophagy regulatory complex containing unc-51-like kinase 1 (ULK1), the mammalian Atg13 protein, and focal adhesion kinase interacting protein of 200 kD (FIP200) has also been elucidated.
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