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- EMDB-11313: Cryo-EM structure of the dynactin complex at 3.8 Angstrom resolution -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-11313 | |||||||||
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Title | Cryo-EM structure of the dynactin complex at 3.8 Angstrom resolution | |||||||||
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![]() | Dynactin / Complex / Scaffold / Cytoskeleton / STRUCTURAL PROTEIN | |||||||||
Function / homology | ![]() RHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / retrograde axonal transport of mitochondrion ...RHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / retrograde axonal transport of mitochondrion / UCH proteinases / Gap junction degradation / Formation of annular gap junctions / RHOF GTPase cycle / Clathrin-mediated endocytosis / Formation of the dystrophin-glycoprotein complex (DGC) / centriolar subdistal appendage / positive regulation of neuromuscular junction development / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / dynactin complex / centriole-centriole cohesion / Recruitment of mitotic centrosome proteins and complexes / microtubule anchoring at centrosome / F-actin capping protein complex / WASH complex / ventral spinal cord development / melanosome transport / retromer complex / cellular response to cytochalasin B / cytoskeleton-dependent cytokinesis / nuclear membrane disassembly / microtubule plus-end / regulation of transepithelial transport / morphogenesis of a polarized epithelium / positive regulation of microtubule nucleation / protein localization to adherens junction / postsynaptic actin cytoskeleton / structural constituent of postsynaptic actin cytoskeleton / Tat protein binding / barbed-end actin filament capping / Neutrophil degranulation / dense body / non-motile cilium assembly / coronary vasculature development / apical protein localization / adherens junction assembly / dynein complex / regulation of cell morphogenesis / retrograde transport, endosome to Golgi / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / tight junction / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / microtubule associated complex / aorta development / COPI-mediated anterograde transport / ventricular septum development / motor behavior / regulation of norepinephrine uptake / nuclear migration / transporter regulator activity / apical junction complex / neuromuscular process / nitric-oxide synthase binding / neuromuscular junction development / NuA4 histone acetyltransferase complex / establishment or maintenance of cell polarity / cortical cytoskeleton / dynein complex binding / cell leading edge / regulation of synaptic vesicle endocytosis / establishment of mitotic spindle orientation / brush border / cleavage furrow / kinesin binding / positive regulation of double-strand break repair via homologous recombination / regulation of protein localization to plasma membrane / intercellular bridge / stress fiber / axon cytoplasm / cytoskeleton organization / neuron projection maintenance / centriole / calyx of Held / regulation of mitotic spindle organization / axonogenesis / sarcomere / mitotic spindle organization / adherens junction / actin filament / cell motility / Schaffer collateral - CA1 synapse / kinetochore / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
![]() | Lau CK / Lacey SE | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM reveals the complex architecture of dynactin's shoulder region and pointed end. Authors: Clinton K Lau / Francis J O'Reilly / Balaji Santhanam / Samuel E Lacey / Juri Rappsilber / Andrew P Carter / ![]() ![]() Abstract: Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled- ...Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled-coil adaptor. Dynactin consists of an actin-related filament whose length is defined by its flexible shoulder domain. Despite previous cryo-EM structures, the molecular architecture of the shoulder and pointed end of the filament is still poorly understood due to the lack of high-resolution information in these regions. Here we combine multiple cryo-EM datasets and define precise masking strategies for particle signal subtraction and 3D classification. This overcomes domain flexibility and results in high-resolution maps into which we can build the shoulder and pointed end. The unique architecture of the shoulder securely houses the p150 subunit and positions the four identical p50 subunits in different conformations to bind dynactin's filament. The pointed end map allows us to build the first structure of p62 and reveals the molecular basis for cargo adaptor binding to different sites at the pointed end. | |||||||||
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 | ![]() | 287.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 28.9 KB 28.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 15.2 KB | Display | ![]() |
Images | ![]() | 34.2 KB | ||
Masks | ![]() | 307.5 MB | ![]() | |
Filedesc metadata | ![]() | 8.8 KB | ||
Others | ![]() ![]() | 244.9 MB 244.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6znlMC ![]() 6znmC ![]() 6znnC ![]() 6znoC ![]() 6zo4C 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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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.34 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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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_11313_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_11313_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Dynactin complex
+Supramolecule #1: Dynactin complex
+Macromolecule #1: ARP1 actin related protein 1 homolog A
+Macromolecule #2: Actin, cytoplasmic 1
+Macromolecule #3: Arp11
+Macromolecule #4: Capping protein (Actin filament) muscle Z-line, alpha 1
+Macromolecule #5: F-actin capping protein beta subunit
+Macromolecule #6: Dynactin subunit 2
+Macromolecule #7: Dynactin subunit 3
+Macromolecule #8: Dynactin 6
+Macromolecule #9: Dynactin subunit 5
+Macromolecule #10: Dynactin subunit 4
+Macromolecule #11: Dynactin subunit 1
+Macromolecule #12: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #13: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #14: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 52.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Protocol: AB INITIO MODEL |
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Output model | ![]() PDB-6znl: |