+
Open data
-
Basic information
| Entry | Database: PDB / ID: 6bcx | ||||||
|---|---|---|---|---|---|---|---|
| Title | mTORC1 structure refined to 3.0 angstroms | ||||||
Components |
| ||||||
Keywords | TRANSFERASE / PIKK | ||||||
| Function / homology | Function and homology informationActivation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S / positive regulation of SCF-dependent proteasomal ubiquitin-dependent catabolic process / RNA polymerase III type 2 promoter sequence-specific DNA binding / eukaryotic initiation factor 4E binding / RNA polymerase III type 1 promoter sequence-specific DNA binding / positive regulation of cytoplasmic translational initiation / regulation of locomotor rhythm / T-helper 1 cell lineage commitment / positive regulation of pentose-phosphate shunt / positive regulation of wound healing, spreading of epidermal cells ...Activation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S / positive regulation of SCF-dependent proteasomal ubiquitin-dependent catabolic process / RNA polymerase III type 2 promoter sequence-specific DNA binding / eukaryotic initiation factor 4E binding / RNA polymerase III type 1 promoter sequence-specific DNA binding / positive regulation of cytoplasmic translational initiation / regulation of locomotor rhythm / T-helper 1 cell lineage commitment / positive regulation of pentose-phosphate shunt / positive regulation of wound healing, spreading of epidermal cells / regulation of membrane permeability / TORC2 complex / cellular response to leucine starvation / TFIIIC-class transcription factor complex binding / heart valve morphogenesis / negative regulation of lysosome organization / voluntary musculoskeletal movement / positive regulation of odontoblast differentiation / TORC1 complex / calcineurin-NFAT signaling cascade / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / RNA polymerase III type 3 promoter sequence-specific DNA binding / positive regulation of keratinocyte migration / regulation of osteoclast differentiation / MTOR signalling / energy reserve metabolic process / cellular response to L-leucine / regulation of lysosome organization / regulation of autophagosome assembly / Energy dependent regulation of mTOR by LKB1-AMPK / cellular response to nutrient / Amino acids regulate mTORC1 / cellular response to methionine / TORC2 signaling / negative regulation of cell size / positive regulation of osteoclast differentiation / cellular response to osmotic stress / anoikis / cell projection organization / inositol hexakisphosphate binding / cardiac muscle cell development / negative regulation of calcineurin-NFAT signaling cascade / positive regulation of ubiquitin-dependent protein catabolic process / regulation of myelination / negative regulation of protein localization to nucleus / positive regulation of transcription by RNA polymerase III / positive regulation of ruffle assembly / regulation of cell size / negative regulation of macroautophagy / Macroautophagy / positive regulation of myotube differentiation / Constitutive Signaling by AKT1 E17K in Cancer / germ cell development / positive regulation of actin filament polymerization / oligodendrocyte differentiation / TORC1 signaling / positive regulation of oligodendrocyte differentiation / behavioral response to pain / TOR signaling / mTORC1-mediated signalling / response to amino acid / positive regulation of translational initiation / CD28 dependent PI3K/Akt signaling / HSF1-dependent transactivation / regulation of macroautophagy / positive regulation of TOR signaling / protein kinase activator activity / protein serine/threonine kinase inhibitor activity / enzyme-substrate adaptor activity / 'de novo' pyrimidine nucleobase biosynthetic process / positive regulation of epithelial to mesenchymal transition / social behavior / positive regulation of lipid biosynthetic process / positive regulation of G1/S transition of mitotic cell cycle / vascular endothelial cell response to laminar fluid shear stress / heart morphogenesis / regulation of cellular response to heat / positive regulation of lamellipodium assembly / neuronal action potential / phagocytic vesicle / T cell costimulation / cardiac muscle contraction / positive regulation of stress fiber assembly / positive regulation of endothelial cell proliferation / translation initiation factor binding / translation repressor activity / negative regulation of insulin receptor signaling pathway / 14-3-3 protein binding / endomembrane system / cytoskeleton organization / negative regulation of translational initiation / positive regulation of mitotic cell cycle / cellular response to nutrient levels / positive regulation of glycolytic process / cellular response to amino acid starvation / Regulation of PTEN gene transcription / regulation of signal transduction by p53 class mediator / cellular response to starvation / negative regulation of autophagy / VEGFR2 mediated vascular permeability 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
| ||||||
Citation | Journal: Nature / Year: 2017Title: 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 |
|
-
Structure visualization
| Movie |
Movie viewer |
|---|---|
| Structure viewer | Molecule: Molmil Jmol/JSmol |
-
Downloads & links
-
Download
| PDBx/mmCIF format | 6bcx.cif.gz | 2.6 MB | Display | PDBx/mmCIF format |
|---|---|---|---|---|
| PDB format | pdb6bcx.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6bcx.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| 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 ( |
|---|---|
| Similar structure data |
-
Links
-
Assembly
| Deposited unit | ![]()
|
|---|---|
| 1 |
|
-
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 |
|---|
-Non-polymers , 2 types, 6 molecules 


| #5: Chemical | | #6: Chemical | ChemComp-MG / |
|---|
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
|---|---|
| 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 |
|---|---|
| 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 |
|---|---|
| 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EM software |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement step | Cycle: 1 / Total: 56580 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
|
Movie
Controller
About Yorodumi




Homo sapiens (human)
United States, 1items
Citation
UCSF Chimera

















PDBj












