+Open data
-Basic information
Entry | Database: PDB / ID: 6bcx | ||||||
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Title | mTORC1 structure refined to 3.0 angstroms | ||||||
Components |
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Keywords | TRANSFERASE / PIKK | ||||||
Function / homology | Function and homology information RNA polymerase III type 2 promoter sequence-specific DNA binding / RNA polymerase III type 1 promoter sequence-specific DNA binding / positive regulation of cytoplasmic translational initiation / Activation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S / T-helper 1 cell lineage commitment / positive regulation of pentose-phosphate shunt / regulation of locomotor rhythm / positive regulation of wound healing, spreading of epidermal cells / eukaryotic initiation factor 4E binding / TORC2 complex ...RNA polymerase III type 2 promoter sequence-specific DNA binding / RNA polymerase III type 1 promoter sequence-specific DNA binding / positive regulation of cytoplasmic translational initiation / Activation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S / T-helper 1 cell lineage commitment / positive regulation of pentose-phosphate shunt / regulation of locomotor rhythm / positive regulation of wound healing, spreading of epidermal cells / eukaryotic initiation factor 4E binding / TORC2 complex / cellular response to leucine starvation / TFIIIC-class transcription factor complex binding / regulation of membrane permeability / heart valve morphogenesis / negative regulation of lysosome organization / nucleus localization / RNA polymerase III type 3 promoter sequence-specific DNA binding / TORC1 complex / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / calcineurin-NFAT signaling cascade / regulation of osteoclast differentiation / voluntary musculoskeletal movement / TORC1 signaling / positive regulation of odontoblast differentiation / positive regulation of keratinocyte migration / cellular response to L-leucine / Amino acids regulate mTORC1 / MTOR signalling / cellular response to nutrient / cellular response to methionine / Energy dependent regulation of mTOR by LKB1-AMPK / regulation of autophagosome assembly / energy reserve metabolic process / negative regulation of cell size / ruffle organization / cellular response to osmotic stress / positive regulation of osteoclast differentiation / protein serine/threonine kinase inhibitor activity / enzyme-substrate adaptor activity / anoikis / cardiac muscle cell development / negative regulation of protein localization to nucleus / positive regulation of transcription by RNA polymerase III / negative regulation of calcineurin-NFAT signaling cascade / regulation of myelination / regulation of cell size / negative regulation of macroautophagy / positive regulation of oligodendrocyte differentiation / positive regulation of actin filament polymerization / lysosome organization / Macroautophagy / positive regulation of myotube differentiation / protein kinase activator activity / oligodendrocyte differentiation / Constitutive Signaling by AKT1 E17K in Cancer / mTORC1-mediated signalling / germ cell development / behavioral response to pain / : / CD28 dependent PI3K/Akt signaling / social behavior / HSF1-dependent transactivation / positive regulation of TOR signaling / neuronal action potential / response to amino acid / TOR signaling / 'de novo' pyrimidine nucleobase biosynthetic process / regulation of macroautophagy / positive regulation of G1/S transition of mitotic cell cycle / positive regulation of translational initiation / cellular response to nutrient levels / endomembrane system / positive regulation of lamellipodium assembly / phosphorylation / positive regulation of lipid biosynthetic process / phagocytic vesicle / positive regulation of epithelial to mesenchymal transition / heart morphogenesis / cardiac muscle contraction / regulation of cellular response to heat / translation repressor activity / positive regulation of stress fiber assembly / 14-3-3 protein binding / negative regulation of translational initiation / cytoskeleton organization / positive regulation of endothelial cell proliferation / T cell costimulation / translation initiation factor binding / cellular response to amino acid starvation / positive regulation of glycolytic process / positive regulation of mitotic cell cycle / cellular response to starvation / protein serine/threonine kinase activator activity / negative regulation of autophagy / response to nutrient / response to nutrient levels / post-embryonic development / VEGFR2 mediated vascular permeability / regulation of signal transduction by p53 class mediator / positive regulation of peptidyl-threonine phosphorylation Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.23 Å | ||||||
Authors | Pavletich, N.P. / Yang, H. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nature / Year: 2017 Title: Mechanisms of mTORC1 activation by RHEB and inhibition by PRAS40. Authors: Haijuan Yang / Xiaolu Jiang / Buren Li / Hyo J Yang / Meredith Miller / Angela Yang / Ankita Dhar / Nikola P Pavletich / Abstract: The mechanistic target of rapamycin complex 1 (mTORC1) controls cell growth and metabolism in response to nutrients, energy levels, and growth factors. It contains the atypical kinase mTOR and the ...The mechanistic target of rapamycin complex 1 (mTORC1) controls cell growth and metabolism in response to nutrients, energy levels, and growth factors. It contains the atypical kinase mTOR and the RAPTOR subunit that binds to the Tor signalling sequence (TOS) motif of substrates and regulators. mTORC1 is activated by the small GTPase RHEB (Ras homologue enriched in brain) and inhibited by PRAS40. Here we present the 3.0 ångström cryo-electron microscopy structure of mTORC1 and the 3.4 ångström structure of activated RHEB-mTORC1. RHEB binds to mTOR distally from the kinase active site, yet causes a global conformational change that allosterically realigns active-site residues, accelerating catalysis. Cancer-associated hyperactivating mutations map to structural elements that maintain the inactive state, and we provide biochemical evidence that they mimic RHEB relieving auto-inhibition. We also present crystal structures of RAPTOR-TOS motif complexes that define the determinants of TOS recognition, of an mTOR FKBP12-rapamycin-binding (FRB) domain-substrate complex that establishes a second substrate-recruitment mechanism, and of a truncated mTOR-PRAS40 complex that reveals PRAS40 inhibits both substrate-recruitment sites. These findings help explain how mTORC1 selects its substrates, how its kinase activity is controlled, and how it is activated by cancer-associated mutations. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6bcx.cif.gz | 2.6 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6bcx.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 6bcx.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6bcx_validation.pdf.gz | 1.1 MB | Display | wwPDB validaton report |
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Full document | 6bcx_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 6bcx_validation.xml.gz | 158.8 KB | Display | |
Data in CIF | 6bcx_validation.cif.gz | 253.1 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/bc/6bcx ftp://data.pdbj.org/pub/pdb/validation_reports/bc/6bcx | HTTPS FTP |
-Related structure data
Related structure data | 7087MC 7086C 5wbhC 5wbiC 5wbjC 5wbkC 5wblC 5wbuC 5wbyC 6bcuC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 4 types, 8 molecules ABDEWYXZ
#1: Protein | Mass: 287399.125 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: MTOR, FRAP, FRAP1, FRAP2, RAFT1, RAPT1 / Production host: Homo sapiens (human) References: UniProt: P42345, non-specific serine/threonine protein kinase #2: Protein | Mass: 35910.090 Da / Num. of mol.: 2 / Fragment: mLST8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: MLST8, GBL, LST8 / Production host: Homo sapiens (human) / References: UniProt: Q9BVC4 #3: Protein | Mass: 150197.000 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: RPTOR, KIAA1303, RAPTOR / Production host: Homo sapiens (human) / References: UniProt: Q8N122 #4: Protein | Mass: 12951.344 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF4EBP1 / Production host: Homo sapiens (human) / References: UniProt: Q13541 |
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-Non-polymers , 2 types, 6 molecules
#5: Chemical | #6: Chemical | ChemComp-MG / |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Dimer of two mTOR-mLST8-RAPTOR-4EBP1 complexes. / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Homo sapiens (human) |
Source (recombinant) | Organism: Homo sapiens (human) |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 56 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: REFMAC / Version: 5.8.0158 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.23 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 580768 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: AB INITIO MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 3.23→3.23 Å / Cor.coef. Fo:Fc: 0.859 / SU B: 23.164 / SU ML: 0.172 / ESU R: 0.272 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1 Å / Solvent model: MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 31.329 Å2
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Refinement step | Cycle: 1 / Total: 56580 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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