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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-5027 | |||||||||
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Title | Kinesin13-Microtubule Ring Complex | |||||||||
![]() | Kinesin 13-Microtubule Ring Complex | |||||||||
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![]() | Kinesin / Kinesin-13 / microtubule / tubulin / depolymerization / Kin-I / M-Kinesin / cytoskeleton | |||||||||
Function / homology | ![]() regulation of chromosome segregation / establishment or maintenance of microtubule cytoskeleton polarity / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / metaphase chromosome alignment / Kinesins / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Resolution of Sister Chromatid Cohesion / COPI-dependent Golgi-to-ER retrograde traffic / RHO GTPases Activate Formins ...regulation of chromosome segregation / establishment or maintenance of microtubule cytoskeleton polarity / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / metaphase chromosome alignment / Kinesins / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Resolution of Sister Chromatid Cohesion / COPI-dependent Golgi-to-ER retrograde traffic / RHO GTPases Activate Formins / Separation of Sister Chromatids / microtubule plus-end / attachment of mitotic spindle microtubules to kinetochore / MHC class II antigen presentation / microtubule plus-end binding / microtubule depolymerization / microtubule motor activity / tubulin complex / kinesin complex / mitotic metaphase chromosome alignment / microtubule-based movement / chromosome, centromeric region / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / structural constituent of cytoskeleton / kinetochore / microtubule cytoskeleton organization / spindle / mitotic cell cycle / microtubule binding / microtubule / hydrolase activity / cell division / GTPase activity / centrosome / GTP binding / ATP hydrolysis activity / ATP binding / nucleus / metal ion binding / cytoplasm Similarity search - Function | |||||||||
Method | helical reconstruction / cryo EM / Resolution: 28.0 Å | |||||||||
![]() | Tan D / Rice WJ / Sosa H | |||||||||
![]() | ![]() Title: Structure of the kinesin13-microtubule ring complex. Authors: Dongyan Tan / William J Rice / Hernando Sosa / ![]() Abstract: To investigate the mechanism of kinesin13-induced microtubule depolymerization, we have calculated a three-dimensional (3D) map of the kinesin13-microtubule ring complex, using cryo-electron ...To investigate the mechanism of kinesin13-induced microtubule depolymerization, we have calculated a three-dimensional (3D) map of the kinesin13-microtubule ring complex, using cryo-electron microscopy (cryo-EM) and image analysis. An atomic model of the complex was produced by docking the crystal structures of tubulin and a kinesin13 motor domain (MD) into the 3D map. The model reveals a snapshot of the depolymerization mechanism by providing a 3D view of the complex formed between the kinesin13 MD and a curved tubulin protofilament (pf). It suggests that contacts mediated by kinesin13 class-specific residues in the putative microtubule-binding site stabilize intra-dimer tubulin curvature. In addition, a tubulin-binding site on the kinesin13 MD was identified. Mutations at this class-conserved site selectively disrupt the formation of microtubule-associated ring complexes. | |||||||||
History |
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Structure visualization
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 340.9 KB | ![]() | |
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Header (meta data) | ![]() ![]() | 14.3 KB 14.3 KB | Display Display | ![]() |
Images | ![]() | 747.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 342.5 KB | Display | ![]() |
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Full document | ![]() | 342 KB | Display | |
Data in XML | ![]() | 3.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 3edlMC M: atomic model generated by this map C: citing same article ( |
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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 | Kinesin 13-Microtubule Ring Complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 6 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Kinesin13-Microtubule Ring Complex
Entire | Name: Kinesin13-Microtubule Ring Complex |
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Components |
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-Supramolecule #1000: Kinesin13-Microtubule Ring Complex
Supramolecule | Name: Kinesin13-Microtubule Ring Complex / type: sample / ID: 1000 / Number unique components: 3 |
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Molecular weight | Experimental: 250 KDa / Theoretical: 250 KDa / Method: SDS-PAGE |
-Macromolecule #1: KLP10a
Macromolecule | Name: KLP10a / type: protein_or_peptide / ID: 1 / Name.synonym: Kinesin-13 / Number of copies: 1 / Oligomeric state: monomer / Recombinant expression: Yes |
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Source (natural) | Cell: BL21 / Location in cell: cytosol |
Molecular weight | Experimental: 400 KDa / Theoretical: 400 KDa |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #2: alpha-tubulin
Macromolecule | Name: alpha-tubulin / type: protein_or_peptide / ID: 2 / Name.synonym: tubulin / Number of copies: 2 / Oligomeric state: Heterodimer / Recombinant expression: No / Database: NCBI |
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Source (natural) | Tissue: Bos taurus Brain |
Molecular weight | Experimental: 550 KDa |
Sequence | GO: tubulin complex / InterPro: Alpha tubulin |
-Macromolecule #3: beta-tubulin
Macromolecule | Name: beta-tubulin / type: protein_or_peptide / ID: 3 / Name.synonym: tubulin / Number of copies: 2 / Oligomeric state: Hterodimer / Recombinant expression: No / Database: NCBI |
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Source (natural) | Tissue: Brain |
Molecular weight | Experimental: 550 KDa |
Sequence | GO: tubulin complex / InterPro: Beta tubulin |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Concentration | 0.6 mg/mL |
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Buffer | pH: 6.8 Details: 80 mM Pipes, pH 6.8, 2 mM MgCl2, 1 mM EGTA, 2 mM AMP-PNP, 0.02 mM taxol |
Grid | Details: Quantifoil grids |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: OTHER / Details: Vitrification instrument: VitroBot Method: Blot for 2 seconds, Blot Offset (mm) -2, Plunge Time 1 sec, Wait Time 0 sec |
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Electron microscopy #1
Microscopy ID | 1 |
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Microscope | FEI TECNAI 20 |
Image recording | Category: FILM / Film or detector model: KODAK SO-163 FILM / Digitization - Scanner: OTHER / Digitization - Sampling interval: 12.5 µm / Number real images: 5 / Average electron dose: 9 e/Å2 / Bits/pixel: 16 |
Electron beam | Acceleration voltage: 120 kV / Electron source: LAB6 |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 50000 |
Sample stage | Specimen holder: Side entry liquid nitrogen-cooled cryo specimen holder Specimen holder model: GATAN LIQUID NITROGEN |
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Electron microscopy #2
Microscopy ID | 2 |
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Microscope | FEI TECNAI F20 |
Image recording | Category: FILM / Film or detector model: KODAK SO-163 FILM / Digitization - Scanner: OTHER / Digitization - Sampling interval: 12.5 µm / Number real images: 5 / Average electron dose: 9 e/Å2 / Bits/pixel: 16 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal magnification: 50000 |
Sample stage | Specimen holder: Side entry liquid nitrogen-cooled cryo specimen holder Specimen holder model: GATAN LIQUID NITROGEN |
Experimental equipment | ![]() Model: Tecnai F20 / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 28.0 Å / Resolution method: FSC 0.5 CUT-OFF / Software - Name: MRC, SUPRIM, Phoelix, Other Details: Final map is the averaged near and far layer line data from 5 filaments (10 datasets, 3296 asymmetric units) |
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CTF correction | Details: Each Particle |
-Atomic model buiding 1
Initial model | PDB ID: Chain - Chain ID: A |
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Software | Name: COLORES |
Details | PDBEntryID_givenInChain. Protocol: Rigid-Body |
Refinement | Space: REAL / Protocol: RIGID BODY FIT |
Output model | ![]() PDB-3edl: |
-Atomic model buiding 2
Initial model | PDB ID: |
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Software | Name: COLORES |
Details | Protocol: Rigid Body |
Refinement | Space: REAL / Protocol: RIGID BODY FIT |
Output model | ![]() PDB-3edl: |