+
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 informationRNA 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 / regulation of locomotor rhythm / 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 / positive regulation of wound healing, spreading of epidermal cells / eukaryotic initiation factor 4E binding / TORC2 signaling ...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 / regulation of locomotor rhythm / 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 / positive regulation of wound healing, spreading of epidermal cells / eukaryotic initiation factor 4E binding / TORC2 signaling / TORC2 complex / regulation of membrane permeability / cellular response to leucine starvation / negative regulation of lysosome organization / heart valve morphogenesis / TFIIIC-class transcription factor complex binding / TORC1 complex / voluntary musculoskeletal movement / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / positive regulation of odontoblast differentiation / calcineurin-NFAT signaling cascade / RNA polymerase III type 3 promoter sequence-specific DNA binding / positive regulation of keratinocyte migration / regulation of osteoclast differentiation / regulation of lysosome organization / MTOR signalling / cellular response to L-leucine / energy reserve metabolic process / regulation of autophagosome assembly / Energy dependent regulation of mTOR by LKB1-AMPK / cellular response to nutrient / Amino acids regulate mTORC1 / TORC1 signaling / serine/threonine protein kinase complex / ruffle organization / cellular response to methionine / positive regulation of osteoclast differentiation / negative regulation of cell size / positive regulation of ubiquitin-dependent protein catabolic process / cellular response to osmotic stress / negative regulation of protein localization to nucleus / anoikis / inositol hexakisphosphate binding / cardiac muscle cell development / negative regulation of calcineurin-NFAT signaling cascade / regulation of myelination / positive regulation of transcription by RNA polymerase III / negative regulation of macroautophagy / Macroautophagy / positive regulation of myotube differentiation / regulation of cell size / Constitutive Signaling by AKT1 E17K in Cancer / positive regulation of actin filament polymerization / germ cell development / TOR signaling / behavioral response to pain / oligodendrocyte differentiation / mTORC1-mediated signalling / positive regulation of oligodendrocyte differentiation / positive regulation of translational initiation / social behavior / protein serine/threonine kinase inhibitor activity / CD28 dependent PI3K/Akt signaling / HSF1-dependent transactivation / positive regulation of TOR signaling / regulation of macroautophagy / protein kinase activator activity / enzyme-substrate adaptor activity / positive regulation of G1/S transition of mitotic cell cycle / response to amino acid / 'de novo' pyrimidine nucleobase biosynthetic process / positive regulation of epithelial to mesenchymal transition / vascular endothelial cell response to laminar fluid shear stress / positive regulation of lipid biosynthetic process / heart morphogenesis / cellular response to nutrient levels / neuronal action potential / regulation of cellular response to heat / positive regulation of lamellipodium assembly / cardiac muscle contraction / T cell costimulation / positive regulation of stress fiber assembly / phagocytic vesicle / translation initiation factor binding / translation repressor activity / 14-3-3 protein binding / positive regulation of endothelial cell proliferation / negative regulation of translational initiation / cytoskeleton organization / endomembrane system / negative regulation of insulin receptor signaling pathway / positive regulation of mitotic cell cycle / negative regulation of autophagy / cellular response to amino acid starvation / regulation of signal transduction by p53 class mediator / positive regulation of glycolytic process / positive regulation of translation / cellular response to starvation / protein serine/threonine kinase activator activity / Regulation of PTEN gene transcription 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
| Summary document | 6bcx_validation.pdf.gz | 1.1 MB | Display | wwPDB validaton report |
|---|---|---|---|---|
| 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 ( |
|---|---|
| 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












