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Open data
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Basic information
Entry | Database: PDB / ID: 5ij0 | |||||||||
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Title | Cryo EM density of microtubule assembled from human TUBB3 | |||||||||
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![]() | STRUCTURAL PROTEIN / human / microtubules / tubulin / hydrolysis | |||||||||
Function / homology | ![]() netrin receptor binding / Post-chaperonin tubulin folding pathway / dorsal root ganglion development / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Carboxyterminal post-translational modifications of tubulin / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Formation of tubulin folding intermediates by CCT/TriC ...netrin receptor binding / Post-chaperonin tubulin folding pathway / dorsal root ganglion development / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / cytoskeleton-dependent intracellular transport / Carboxyterminal post-translational modifications of tubulin / Intraflagellar transport / Sealing of the nuclear envelope (NE) by ESCRT-III / Formation of tubulin folding intermediates by CCT/TriC / COPI-independent Golgi-to-ER retrograde traffic / Gap junction assembly / Prefoldin mediated transfer of substrate to CCT/TriC / Kinesins / Assembly and cell surface presentation of NMDA receptors / COPI-dependent Golgi-to-ER retrograde traffic / intercellular bridge / Recycling pathway of L1 / RHOH GTPase cycle / RHO GTPases activate IQGAPs / cytoplasmic microtubule / Hedgehog 'off' state / COPI-mediated anterograde transport / microtubule-based process / Activation of AMPK downstream of NMDARs / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / Resolution of Sister Chromatid Cohesion / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / cellular response to interleukin-4 / peptide binding / axon guidance / filopodium / cell periphery / Translocation of SLC2A4 (GLUT4) to the plasma membrane / RHO GTPases Activate Formins / PKR-mediated signaling / structural constituent of cytoskeleton / mitotic spindle / microtubule cytoskeleton organization / HCMV Early Events / Aggrephagy / Separation of Sister Chromatids / microtubule cytoskeleton / The role of GTSE1 in G2/M progression after G2 checkpoint / mitotic cell cycle / lamellipodium / double-stranded RNA binding / growth cone / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / axon / cell division / GTPase activity / neuronal cell body / dendrite / ubiquitin protein ligase binding / GTP binding / structural molecule activity / extracellular exosome / nucleus / metal ion binding / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
![]() | Ti, S.-C. / Pamula, M.C. / Howes, S.C. / Duellberg, C. / Nicholas, C.I. / Kleiner, R.E. / Forth, S. / Surrey, T. / Nogales, E. / Kapoor, T.M. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Mutations in Human Tubulin Proximal to the Kinesin-Binding Site Alter Dynamic Instability at Microtubule Plus- and Minus-Ends. Authors: Shih-Chieh Ti / Melissa C Pamula / Stuart C Howes / Christian Duellberg / Nicholas I Cade / Ralph E Kleiner / Scott Forth / Thomas Surrey / Eva Nogales / Tarun M Kapoor / ![]() ![]() Abstract: The assembly of microtubule-based cellular structures depends on regulated tubulin polymerization and directional transport. Here, we purify and characterize tubulin heterodimers that have human β- ...The assembly of microtubule-based cellular structures depends on regulated tubulin polymerization and directional transport. Here, we purify and characterize tubulin heterodimers that have human β-tubulin isotype III (TUBB3), as well as heterodimers with one of two β-tubulin mutations (D417H or R262H). Both point mutations are proximal to the kinesin-binding site and have been linked to an ocular motility disorder in humans. Compared to wild-type, microtubules with these mutations have decreased catastrophe frequencies and increased average lifetimes of plus- and minus-end-stabilizing caps. Importantly, the D417H mutation does not alter microtubule lattice structure or Mal3 binding to growing filaments. Instead, this mutation reduces the affinity of tubulin for TOG domains and colchicine, suggesting that the distribution of tubulin heterodimer conformations is changed. Together, our findings reveal how residues on the surface of microtubules, distal from the GTP-hydrolysis site and inter-subunit contacts, can alter polymerization dynamics at the plus- and minus-ends of microtubules. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 317 KB | Display | ![]() |
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PDB format | ![]() | 259.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 31.6 KB | Display | |
Data in CIF | ![]() | 45.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8094MC ![]() 8095C ![]() 5ij9C M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 48665.027 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 47809.926 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Chemical | ChemComp-GTP / |
#4: Chemical | ChemComp-MG / |
#5: Chemical | ChemComp-GDP / |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: HELICAL ARRAY / 3D reconstruction method: helical reconstruction |
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Sample preparation
Component | Name: Microtubule assembled from recombinant human tubulin decorated with kinesin Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 6.9 |
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: FEI TITAN |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Specimen holder | Specimen holder model: GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER |
Image recording | Electron dose: 27.6 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
EM software | Name: Leginon / Category: image acquisition |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
Helical symmerty | Angular rotation/subunit: -27.69 ° / Axial rise/subunit: 9.44 Å / Axial symmetry: C1 |
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 24268 / Symmetry type: HELICAL |