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- EMDB-45513: The WIPI3:TSC lysosomal docking complex (focused reconstruction; ... -
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Open data
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Basic information
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Title | The WIPI3:TSC lysosomal docking complex (focused reconstruction; TBC1D7) | ||||||||||||
![]() | Raw final map | ||||||||||||
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![]() | Tuberous sclerosis complex / tumour suppressor / GTPase-activating proteins (GAP) / TSC-mTORC pathway / ONCOPROTEIN | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.93 Å | ||||||||||||
![]() | Bayly-Jones C / Lupton CJ / D'Andrea L / Ellisdon AM | ||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structure of the human TSC:WIPI3 lysosomal recruitment complex. Authors: Charles Bayly-Jones / Christopher J Lupton / Laura D'Andrea / Yong-Gang Chang / Gareth D Jones / Joel R Steele / Hari Venugopal / Ralf B Schittenhelm / Michelle L Halls / Andrew M Ellisdon / ![]() Abstract: Tuberous sclerosis complex (TSC) is targeted to the lysosomal membrane, where it hydrolyzes RAS homolog-mTORC1 binding (RHEB) from its GTP-bound to GDP-bound state, inhibiting mechanistic target of ...Tuberous sclerosis complex (TSC) is targeted to the lysosomal membrane, where it hydrolyzes RAS homolog-mTORC1 binding (RHEB) from its GTP-bound to GDP-bound state, inhibiting mechanistic target of rapamycin complex 1 (mTORC1). Loss-of-function mutations in TSC cause TSC disease, marked by excessive tumor growth. Here, we overcome a high degree of continuous conformational heterogeneity to determine the 2.8-Å cryo-electron microscopy (cryo-EM) structure of the complete human TSC in complex with the lysosomal recruitment factor WD repeat domain phosphoinositide-interacting protein 3 (WIPI3). We discover a previously undetected amino-terminal TSC1 HEAT repeat dimer that clamps onto a single TSC wing and forms a phosphatidylinositol phosphate (PIP)-binding pocket, which specifically binds monophosphorylated PIPs. These structural advances provide a model by which WIPI3 and PIP-signaling networks coordinate to recruit TSC to the lysosomal membrane to inhibit mTORC1. The high-resolution TSC structure reveals previously unrecognized mutational hotspots and uncovers crucial insights into the mechanisms of TSC dysregulation in disease. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 50 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 22.6 KB 22.6 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 9.7 KB | Display | ![]() |
Images | ![]() | 78.9 KB | ||
Masks | ![]() | 98.9 MB | ![]() | |
Filedesc metadata | ![]() | 5.2 KB | ||
Others | ![]() ![]() ![]() | 23.8 MB 92 MB 92 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Map
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Annotation | Raw final map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1714 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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Density Histograms |
-Additional map: Sharpened map
File | emd_45513_additional_1.map | ||||||||||||
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Annotation | Sharpened map | ||||||||||||
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Density Histograms |
-Half map: Unfiltered half map (A)
File | emd_45513_half_map_1.map | ||||||||||||
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Annotation | Unfiltered half map (A) | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Unfiltered half map (B)
File | emd_45513_half_map_2.map | ||||||||||||
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Annotation | Unfiltered half map (B) | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : TSC:WIPI3 lysosomal recruitment complex
Entire | Name: TSC:WIPI3 lysosomal recruitment complex |
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Components |
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-Supramolecule #1: TSC:WIPI3 lysosomal recruitment complex
Supramolecule | Name: TSC:WIPI3 lysosomal recruitment complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 733 KDa |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 1.4 mg/mL | ||||||||||||
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Buffer | pH: 7.6 Component:
Details: 20 mM HEPES (pH 7.6), 250 mM NaCl, 2 mM DTT | ||||||||||||
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 12807 / Average exposure time: 3.71 sec. / Average electron dose: 46.54 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.01 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 105000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Initial model |
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Refinement | Space: REAL / Protocol: OTHER / Overall B value: 96.4 / Target criteria: Cross-correlation coefficient |