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Open data
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Basic information
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| Title | Composite structure of dynein-dynactin on microtubules | |||||||||
Map data | Composite structure of dynein-dynactin on microtubules | |||||||||
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Keywords | dynein / dynactin / microtubule / MOTOR PROTEIN | |||||||||
| Function / homology | Function and homology informationRHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / retrograde axonal transport of mitochondrion / 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 ...RHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / retrograde axonal transport of mitochondrion / 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 / UCH proteinases / Gap junction degradation / Formation of annular gap junctions / RHOF GTPase cycle / centriolar subdistal appendage / Clathrin-mediated endocytosis / Formation of the dystrophin-glycoprotein complex (DGC) / positive regulation of neuromuscular junction development / dynactin complex / centriole-centriole cohesion / 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 / F-actin capping protein complex / WASH complex / microtubule anchoring at centrosome / Recruitment of mitotic centrosome proteins and complexes / ventral spinal cord development / retromer complex / cytoskeleton-dependent cytokinesis / microtubule plus-end / nuclear membrane disassembly / cellular response to cytochalasin B / positive regulation of microtubule nucleation / regulation of transepithelial transport / morphogenesis of a polarized epithelium / structural constituent of postsynaptic actin cytoskeleton / barbed-end actin filament capping / melanosome transport / protein localization to adherens junction / dense body / Neutrophil degranulation / postsynaptic actin cytoskeleton / Tat protein binding / coronary vasculature development / non-motile cilium assembly / regulation of cell morphogenesis / dynein complex / retrograde transport, endosome to Golgi / adherens junction assembly / apical protein localization / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / tight junction / minus-end-directed microtubule motor activity / microtubule associated complex / cytoplasmic dynein complex / dynein light intermediate chain binding / centrosome localization / COPI-mediated anterograde transport / aorta development / ventricular septum development / neuromuscular process / microtubule-based movement / nuclear migration / apical junction complex / regulation of norepinephrine uptake / neuromuscular junction development / transporter regulator activity / nitric-oxide synthase binding / cortical cytoskeleton / NuA4 histone acetyltransferase complex / establishment or maintenance of cell polarity / dynein complex binding / cell leading edge / motor behavior / dynein intermediate chain binding / cleavage furrow / brush border / establishment of mitotic spindle orientation / kinesin binding / regulation of synaptic vesicle endocytosis / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / intercellular bridge / stress fiber / cytoskeleton organization / neuron projection maintenance / axon cytoplasm / centriole / axonogenesis / regulation of mitotic spindle organization / calyx of Held / sarcomere / nitric-oxide synthase regulator activity Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 15.0 Å | |||||||||
Authors | Rao Q / Chai P / Zhang K | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: bioRxiv / Year: 2024Title: Molecular basis for the assembly of the dynein transport machinery on microtubules. Authors: Qinhui Rao / Pengxin Chai / Kai Zhang / ![]() Abstract: Cytoplasmic dynein-1, a microtubule-based motor protein, requires dynactin and an adaptor to form the processive dynein-dynactin-adaptor (DDA) complex. The role of microtubules in DDA assembly has ...Cytoplasmic dynein-1, a microtubule-based motor protein, requires dynactin and an adaptor to form the processive dynein-dynactin-adaptor (DDA) complex. The role of microtubules in DDA assembly has been elusive. Here, we reveal detailed structural insights into microtubule-mediated DDA assembly using cryo-electron microscopy. We find that an adaptor-independent dynein-dynactin complex (DD) predominantly forms on microtubules in an intrinsic 2:1 stoichiometry, induced by spontaneous parallelization of dynein upon microtubule binding. Adaptors can squeeze in and exchange within the assembled microtubule-bound DD complex, which is enabled by relative rotations between dynein and dynactin, and further facilitated by dynein light intermediate chains that assist in an adaptor 'search' mechanism. Our findings elucidate the dynamic adaptability of the dynein transport machinery, and reveal a new mode for assembly of the motile complex. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_46845.map.gz | 92.9 MB | EMDB map data format | |
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| Header (meta data) | emd-46845-v30.xml emd-46845.xml | 34.5 KB 34.5 KB | Display Display | EMDB header |
| Images | emd_46845.png | 32.8 KB | ||
| Filedesc metadata | emd-46845.cif.gz | 12.6 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-46845 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-46845 | HTTPS FTP |
-Validation report
| Summary document | emd_46845_validation.pdf.gz | 418.1 KB | Display | EMDB validaton report |
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| Full document | emd_46845_full_validation.pdf.gz | 417.6 KB | Display | |
| Data in XML | emd_46845_validation.xml.gz | 6.4 KB | Display | |
| Data in CIF | emd_46845_validation.cif.gz | 7.4 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-46845 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-46845 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9dgrMC ![]() 9dgpC ![]() 9dgqC ![]() 9dgsC ![]() 9dgtC ![]() 9dguC ![]() 9dgvC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_46845.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Composite structure of dynein-dynactin on microtubules | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 3.3 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : structure of dynein-dynactin on microtubules
+Supramolecule #1: structure of dynein-dynactin on microtubules
+Macromolecule #1: Alpha-centractin
+Macromolecule #2: Actin, cytoplasmic 1
+Macromolecule #3: Actin-related protein 10
+Macromolecule #4: F-actin-capping protein subunit alpha-1
+Macromolecule #5: F-actin-capping protein subunit beta
+Macromolecule #6: Dynactin subunit 2
+Macromolecule #7: Dynactin subunit 3
+Macromolecule #8: Dynactin subunit 6
+Macromolecule #9: Dynactin subunit 5
+Macromolecule #10: Dynactin subunit 1
+Macromolecule #11: Dynactin subunit 4
+Macromolecule #12: Cytoplasmic dynein 1 heavy chain 1
+Macromolecule #13: Cytoplasmic dynein 1 intermediate chain 2
+Macromolecule #14: Dynein light intermediate chain
+Macromolecule #15: Dynein light chain roadblock
+Macromolecule #16: ZINC ION
+Macromolecule #17: MAGNESIUM ION
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.2 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 40.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Calibrated defocus max: 3.0 µm / Calibrated defocus min: 1.2 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.2 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Authors
United States, 1 items
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Processing
FIELD EMISSION GUN
