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- EMDB-24617: Cryo-EM structure of murine Dispatched in complex with Sonic hedgehog -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-24617 | ||||||||||||||||||
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Title | Cryo-EM structure of murine Dispatched in complex with Sonic hedgehog | ||||||||||||||||||
![]() | DISP1-A:ShhN complex - auto-sharpened map from cryoSPARC nonuniform refinement (paper version), units of standard deviation above mean density. | ||||||||||||||||||
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![]() | RND transporter / ![]() ![]() ![]() | ||||||||||||||||||
Function / homology | ![]() forebrain regionalization / ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||||||||
Method | ![]() ![]() | ||||||||||||||||||
![]() | Asarnow D / Wang Q | ||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Dispatched uses Na flux to power release of lipid-modified Hedgehog. Authors: Qianqian Wang / Daniel E Asarnow / Ke Ding / Randall K Mann / Jason Hatakeyama / Yunxiao Zhang / Yong Ma / Yifan Cheng / Philip A Beachy / ![]() ![]() Abstract: The Dispatched protein, which is related to the NPC1 and PTCH1 cholesterol transporters and to H-driven transporters of the RND family, enables tissue-patterning activity of the lipid-modified ...The Dispatched protein, which is related to the NPC1 and PTCH1 cholesterol transporters and to H-driven transporters of the RND family, enables tissue-patterning activity of the lipid-modified Hedgehog protein by releasing it from tightly -localized sites of embryonic expression. Here we determine a cryo-electron microscopy structure of the mouse protein Dispatched homologue 1 (DISP1), revealing three Na ions coordinated within a channel that traverses its transmembrane domain. We find that the rate of Hedgehog export is dependent on the Na gradient across the plasma membrane. The transmembrane channel and Na binding are disrupted in DISP1-NNN, a variant with asparagine substitutions for three intramembrane aspartate residues that each coordinate and neutralize the charge of one of the three Na ions. DISP1-NNN and variants that disrupt single Na sites retain binding to, but are impaired in export of the lipid-modified Hedgehog protein to the SCUBE2 acceptor. Interaction of the amino-terminal signalling domain of the Sonic hedgehog protein (ShhN) with DISP1 occurs via an extensive buried surface area and contacts with an extended furin-cleaved DISP1 arm. Variability analysis reveals that ShhN binding is restricted to one extreme of a continuous series of DISP1 conformations. The bound and unbound DISP1 conformations display distinct Na-site occupancies, which suggests a mechanism by which transmembrane Na flux may power extraction of the lipid-linked Hedgehog signal from the membrane. Na-coordinating residues in DISP1 are conserved in PTCH1 and other metazoan RND family members, suggesting that Na flux powers their conformationally driven activities. | ||||||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 82.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 30.8 KB 30.8 KB | Display Display | ![]() |
Images | ![]() | 129.6 KB | ||
Masks | ![]() ![]() | 91.1 MB 91.1 MB | ![]() | |
Filedesc metadata | ![]() | 8.2 KB | ||
Others | ![]() ![]() ![]() ![]() | 44.8 MB 85.9 MB 84.5 MB 84.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7rpkMC ![]() 7rphC ![]() 7rpiC ![]() 7rpjC C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | DISP1-A:ShhN complex - auto-sharpened map from cryoSPARC nonuniform refinement (paper version), units of standard deviation above mean density. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.835 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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-Mask #2
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Density Histograms |
-Additional map: DISP1-A:ShhN complex - raw map from cryoSPARC nonuniform...
File | emd_24617_additional_1.map | ||||||||||||
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Annotation | DISP1-A:ShhN complex - raw map from cryoSPARC nonuniform refinement (paper version). | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: DISP1-A:ShhN complex - auto-sharpened map from cryoSPARC nonuniform...
File | emd_24617_additional_2.map | ||||||||||||
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Annotation | DISP1-A:ShhN complex - auto-sharpened map from cryoSPARC nonuniform refinement (paper version). | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: DISP1-A:ShhN complex - half map 1 from cryoSPARC...
File | emd_24617_half_map_1.map | ||||||||||||
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Annotation | DISP1-A:ShhN complex - half map 1 from cryoSPARC nonuniform refinement (paper version). | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: DISP1-A:ShhN complex - half map 2 from cryoSPARC...
File | emd_24617_half_map_2.map | ||||||||||||
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Annotation | DISP1-A:ShhN complex - half map 2 from cryoSPARC nonuniform refinement (paper version). | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Dispatched protein complexed with Sonic hedgehog 26-189
+Supramolecule #1: Dispatched protein complexed with Sonic hedgehog 26-189
+Macromolecule #1: Protein dispatched homolog 1
+Macromolecule #2: Sonic hedgehog protein
+Macromolecule #3: CHOLESTEROL HEMISUCCINATE
+Macromolecule #4: Lauryl Maltose Neopentyl Glycol
+Macromolecule #5: SODIUM ION
+Macromolecule #6: (2S)-3-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-(hexanoylo...
+Macromolecule #7: 2-acetamido-2-deoxy-beta-D-glucopyranose
+Macromolecule #8: CALCIUM ION
+Macromolecule #9: ZINC ION
+Macromolecule #10: SULFATE ION
+Macromolecule #11: water
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Concentration | 1.56 mg/mL | |||||||||||||||||||||
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Buffer | pH: 7.5 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR | |||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K / Instrument: FEI VITROBOT MARK IV Details: Wait time 20 seconds, blot time 4 seconds, blotting force 0. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 100.0 µm / Calibrated magnification: 59880 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Details | Automated data collection in SerialEM using 3x3 image shift pattern (one shot per hole), using beam tilt compensation. |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 1687 / Average electron dose: 66.7 e/Å2 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Particle selection | Number selected: 1406648 |
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Startup model | Type of model: OTHER / Details: Ab initio reconstruction from cryoSPARC |
Initial angle assignment | Type: RANDOM ASSIGNMENT / Software - Name: cryoSPARC |
Final 3D classification | Number classes: 4 / Software - Name: cryoSPARC |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC |
Final reconstruction | Number classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 204786 |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT / Overall B value: 69.9 |
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Output model | ![]() PDB-7rpk: |