+Open data
-Basic information
Entry | Database: PDB / ID: 6i2i | ||||||||||||
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Title | Refined 13pf Hela Cell Tubulin microtubule (EML4-NTD decorated) | ||||||||||||
Components |
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Keywords | STRUCTURAL PROTEIN / Microtubule / Tubulin / Hela / EML | ||||||||||||
Function / homology | Function and homology information odontoblast differentiation / Post-chaperonin tubulin folding pathway / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Gap junction assembly / Formation of tubulin folding intermediates by CCT/TriC ...odontoblast differentiation / Post-chaperonin tubulin folding pathway / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Gap junction assembly / Formation of tubulin folding intermediates by CCT/TriC / natural killer cell mediated cytotoxicity / COPI-independent Golgi-to-ER retrograde traffic / Kinesins / Assembly and cell surface presentation of NMDA receptors / GTPase activating protein binding / COPI-dependent Golgi-to-ER retrograde traffic / regulation of synapse organization / intercellular bridge / nuclear envelope lumen / Recycling pathway of L1 / RHOH GTPase cycle / spindle assembly / RHO GTPases activate IQGAPs / MHC class I protein binding / Hedgehog 'off' state / cytoplasmic microtubule / microtubule-based process / COPI-mediated anterograde transport / Activation of AMPK downstream of NMDARs / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / Resolution of Sister Chromatid Cohesion / Recruitment of NuMA to mitotic centrosomes / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Anchoring of the basal body to the plasma membrane / MHC class II antigen presentation / cellular response to interleukin-4 / AURKA Activation by TPX2 / RHO GTPases Activate Formins / Translocation of SLC2A4 (GLUT4) to the plasma membrane / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / PKR-mediated signaling / structural constituent of cytoskeleton / cytoplasmic ribonucleoprotein granule / mitotic spindle / microtubule cytoskeleton organization / Aggrephagy / HCMV Early Events / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / microtubule cytoskeleton / azurophil granule lumen / Regulation of PLK1 Activity at G2/M Transition / double-stranded RNA binding / mitotic cell cycle / cell body / microtubule / Potential therapeutics for SARS / cytoskeleton / membrane raft / cell division / protein domain specific binding / GTPase activity / ubiquitin protein ligase binding / Neutrophil degranulation / protein-containing complex binding / GTP binding / structural molecule activity / protein-containing complex / extracellular exosome / extracellular region / metal ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | ||||||||||||
Authors | Atherton, J.M. / Moores, C.A. | ||||||||||||
Funding support | United Kingdom, 3items
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Citation | Journal: Sci Signal / Year: 2019 Title: Mitotic phosphorylation by NEK6 and NEK7 reduces the microtubule affinity of EML4 to promote chromosome congression. Authors: Rozita Adib / Jessica M Montgomery / Joseph Atherton / Laura O'Regan / Mark W Richards / Kees R Straatman / Daniel Roth / Anne Straube / Richard Bayliss / Carolyn A Moores / Andrew M Fry / Abstract: EML4 is a microtubule-associated protein that promotes microtubule stability. We investigated its regulation across the cell cycle and found that EML4 was distributed as punctate foci along the ...EML4 is a microtubule-associated protein that promotes microtubule stability. We investigated its regulation across the cell cycle and found that EML4 was distributed as punctate foci along the microtubule lattice in interphase but exhibited reduced association with spindle microtubules in mitosis. Microtubule sedimentation and cryo-electron microscopy with 3D reconstruction revealed that the basic N-terminal domain of EML4 mediated its binding to the acidic C-terminal tails of α- and β-tubulin on the microtubule surface. The mitotic kinases NEK6 and NEK7 phosphorylated the EML4 N-terminal domain at Ser and Ser in vitro, and depletion of these kinases in cells led to increased EML4 binding to microtubules in mitosis. An S144A-S146A double mutant not only bound inappropriately to mitotic microtubules but also increased their stability and interfered with chromosome congression. In addition, constitutive activation of NEK6 or NEK7 reduced the association of EML4 with interphase microtubules. Together, these data support a model in which NEK6- and NEK7-dependent phosphorylation promotes the dissociation of EML4 from microtubules in mitosis in a manner that is required for efficient chromosome congression. | ||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
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PDBx/mmCIF format | 6i2i.cif.gz | 159.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6i2i.ent.gz | 130.3 KB | Display | PDB format |
PDBx/mmJSON format | 6i2i.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/i2/6i2i ftp://data.pdbj.org/pub/pdb/validation_reports/i2/6i2i | HTTPS FTP |
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-Related structure data
Related structure data | 0331MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 2 types, 2 molecules AB
#1: Protein | Mass: 50204.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: Hela Cells / Plasmid details: Cytoskeleton Inc. / References: UniProt: P68363 |
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#2: Protein | Mass: 49717.629 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: Beta1-tubulin / Source: (natural) Homo sapiens (human) / Cell line: Hela Cells / Plasmid details: Cytoskeleton Inc. / References: UniProt: P07437 |
-Non-polymers , 4 types, 5 molecules
#3: Chemical | ChemComp-GTP / | ||||
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#4: Chemical | #5: Chemical | ChemComp-G2P / | #6: Chemical | ChemComp-TA1 / | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Alpha and beta-tubulin from Hela Cell (modelled) decorated with EML4-NTD (not modelled) Type: COMPLEX Details: EML4-NTD density at low resolution due to flexibility, thus was not modelled Entity ID: #1-#2 / Source: NATURAL |
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Molecular weight | Value: 110 kDa/nm / Experimental value: NO |
Source (natural) | Organism: Homo sapiens (human) / Cell: Hela |
Buffer solution | pH: 6.8 Details: 25mM PIPES, 1.5mM MgCl2, 1mM EGTA, 1mM DTT, 30mM NaCl,1mM GMPCPP |
Buffer component | Name: BRB25 |
Specimen | Conc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: Microtubules formed from Hela cell tubulin |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy |
Image recording | Electron dose: 48 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Details: Dose-weighted sums used in reconstruction |
-Processing
Software | Name: PHENIX / Version: 1.11.1_2575: / Classification: refinement | ||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19542 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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