National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA103866
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
R37 AI47389
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA129105
米国
Lustgarten Foundation
米国
Department of Defense (DOD, United States)
W81XWH-07-0448
米国
Howard Hughes Medical Institute (HHMI)
米国
Tuberous Sclerosis Association
英国
American Cancer Society
米国
引用
ジャーナル: Science / 年: 2019 タイトル: Structural basis for the docking of mTORC1 on the lysosomal surface. 著者: Kacper B Rogala / Xin Gu / Jibril F Kedir / Monther Abu-Remaileh / Laura F Bianchi / Alexia M S Bottino / Rikke Dueholm / Anna Niehaus / Daan Overwijn / Ange-Célia Priso Fils / Sherry X Zhou ...著者: Kacper B Rogala / Xin Gu / Jibril F Kedir / Monther Abu-Remaileh / Laura F Bianchi / Alexia M S Bottino / Rikke Dueholm / Anna Niehaus / Daan Overwijn / Ange-Célia Priso Fils / Sherry X Zhou / Daniel Leary / Nouf N Laqtom / Edward J Brignole / David M Sabatini / 要旨: The mTORC1 (mechanistic target of rapamycin complex 1) protein kinase regulates growth in response to nutrients and growth factors. Nutrients promote its translocation to the lysosomal surface, where ...The mTORC1 (mechanistic target of rapamycin complex 1) protein kinase regulates growth in response to nutrients and growth factors. Nutrients promote its translocation to the lysosomal surface, where its Raptor subunit interacts with the Rag guanosine triphosphatase (GTPase)-Ragulator complex. Nutrients switch the heterodimeric Rag GTPases among four different nucleotide-binding states, only one of which (RagA/B•GTP-RagC/D•GDP) permits mTORC1 association. We used cryo-electron microscopy to determine the structure of the supercomplex of Raptor with Rag-Ragulator at a resolution of 3.2 angstroms. Our findings indicate that the Raptor α-solenoid directly detects the nucleotide state of RagA while the Raptor "claw" threads between the GTPase domains to detect that of RagC. Mutations that disrupted Rag-Raptor binding inhibited mTORC1 lysosomal localization and signaling. By comparison with a structure of mTORC1 bound to its activator Rheb, we developed a model of active mTORC1 docked on the lysosome.