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Open data
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Basic information
| Entry | Database: PDB / ID: 9dgp | ||||||||||||||||||||||||
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| Title | Motor domain of dynein-1 complex on microtubules | ||||||||||||||||||||||||
Components | Cytoplasmic dynein 1 heavy chain 1 | ||||||||||||||||||||||||
Keywords | MOTOR PROTEIN / dynein / microtubule | ||||||||||||||||||||||||
| Function / homology | Function and homology informationdynein complex / minus-end-directed microtubule motor activity / dynein light intermediate chain binding / microtubule-based movement / dynein intermediate chain binding / microtubule / cell division / ATP binding / cytoplasm Similarity search - Function | ||||||||||||||||||||||||
| Biological species | ![]() | ||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||||||||||||||||||||
Authors | Rao, Q. / Chai, P. / Zhang, K. | ||||||||||||||||||||||||
| Funding support | United States, 1items
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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. | ||||||||||||||||||||||||
| History |
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9dgp.cif.gz | 645.2 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9dgp.ent.gz | 502.8 KB | Display | PDB format |
| PDBx/mmJSON format | 9dgp.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9dgp_validation.pdf.gz | 1.7 MB | Display | wwPDB validaton report |
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| Full document | 9dgp_full_validation.pdf.gz | 1.7 MB | Display | |
| Data in XML | 9dgp_validation.xml.gz | 89.9 KB | Display | |
| Data in CIF | 9dgp_validation.cif.gz | 137.6 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/dg/9dgp ftp://data.pdbj.org/pub/pdb/validation_reports/dg/9dgp | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 46843MC ![]() 9dgqC ![]() 9dgrC ![]() 9dgsC ![]() 9dgtC ![]() 9dguC ![]() 9dgvC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 532739.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||
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| #2: Chemical | ChemComp-ADP / | ||||||
| #3: Chemical | ChemComp-ATP / | ||||||
| #4: Chemical | | #5: Chemical | ChemComp-MG / Has ligand of interest | Y | Has protein modification | N | |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Motor domain of dynein on microtubules / Type: COMPLEX / Entity ID: #1 / Source: NATURAL |
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| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.2 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Microscopy | Model: TFS GLACIOS |
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| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1200 nm / Calibrated defocus min: 1200 nm / Calibrated defocus max: 3000 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 106660 / Num. of class averages: 1 / Symmetry type: POINT |
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FIELD EMISSION GUN