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Yorodumi- PDB-5n5n: Cryo-EM structure of tsA201 cell alpha1B and betaI and betaIVb mi... -
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Basic information
| Entry | Database: PDB / ID: 5n5n | |||||||||
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| Title | Cryo-EM structure of tsA201 cell alpha1B and betaI and betaIVb microtubules | |||||||||
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Keywords | STRUCTURAL PROTEIN / Microtubules Dynamics Tubulin Isoform | |||||||||
| Function / homology | Function and homology informationodontoblast differentiation / Cilium Assembly / Post-chaperonin tubulin folding pathway / cytoskeleton-dependent intracellular transport / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Sealing of the nuclear envelope (NE) by ESCRT-III / Intraflagellar transport / Formation of tubulin folding intermediates by CCT/TriC / Gap junction assembly ...odontoblast differentiation / Cilium Assembly / Post-chaperonin tubulin folding pathway / cytoskeleton-dependent intracellular transport / Carboxyterminal post-translational modifications of tubulin / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Sealing of the nuclear envelope (NE) by ESCRT-III / Intraflagellar transport / Formation of tubulin folding intermediates by CCT/TriC / Gap junction assembly / Kinesins / Assembly and cell surface presentation of NMDA receptors / COPI-independent Golgi-to-ER retrograde traffic / GTPase activating protein binding / natural killer cell mediated cytotoxicity / COPI-dependent Golgi-to-ER retrograde traffic / nuclear envelope lumen / regulation of synapse organization / Recycling pathway of L1 / RHOH GTPase cycle / MHC class I protein binding / microtubule-based process / RHO GTPases activate IQGAPs / Hedgehog 'off' state / intercellular bridge / COPI-mediated anterograde transport / cytoplasmic microtubule / Activation of AMPK downstream of NMDARs / cellular response to interleukin-4 / ciliary tip / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / AURKA Activation by TPX2 / Resolution of Sister Chromatid Cohesion / Translocation of SLC2A4 (GLUT4) to the plasma membrane / sperm end piece / sperm principal piece / RHO GTPases Activate Formins / PKR-mediated signaling / microtubule cytoskeleton organization / structural constituent of cytoskeleton / HCMV Early Events / cytoplasmic ribonucleoprotein granule / Aggrephagy / mitotic spindle / azurophil granule lumen / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / Regulation of PLK1 Activity at G2/M Transition / mitotic cell cycle / double-stranded RNA binding / microtubule cytoskeleton / cell body / Potential therapeutics for SARS / microtubule / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / cytoskeleton / cilium / membrane raft / protein domain specific binding / cell division / GTPase activity / ubiquitin protein ligase binding / Neutrophil degranulation / GTP binding / protein-containing complex 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: 4.2 Å | |||||||||
Authors | Vemu, A. / Atherton, J. / Spector, J.O. / Moores, C.A. / Roll-Mecak, A. | |||||||||
| Funding support | United Kingdom, United States, 2items
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Citation | Journal: Mol Biol Cell / Year: 2017Title: Tubulin isoform composition tunes microtubule dynamics. Authors: Annapurna Vemu / Joseph Atherton / Jeffrey O Spector / Carolyn A Moores / Antonina Roll-Mecak / ![]() Abstract: Microtubules polymerize and depolymerize stochastically, a behavior essential for cell division, motility, and differentiation. While many studies advanced our understanding of how microtubule- ...Microtubules polymerize and depolymerize stochastically, a behavior essential for cell division, motility, and differentiation. While many studies advanced our understanding of how microtubule-associated proteins tune microtubule dynamics in trans, we have yet to understand how tubulin genetic diversity regulates microtubule functions. The majority of in vitro dynamics studies are performed with tubulin purified from brain tissue. This preparation is not representative of tubulin found in many cell types. Here we report the 4.2-Å cryo-electron microscopy (cryo-EM) structure and in vitro dynamics parameters of α1B/βI+βIVb microtubules assembled from tubulin purified from a human embryonic kidney cell line with isoform composition characteristic of fibroblasts and many immortalized cell lines. We find that these microtubules grow faster and transition to depolymerization less frequently compared with brain microtubules. Cryo-EM reveals that the dynamic ends of α1B/βI+βIVb microtubules are less tapered and that these tubulin heterodimers display lower curvatures. Interestingly, analysis of EB1 distributions at dynamic ends suggests no differences in GTP cap sizes. Last, we show that the addition of recombinant α1A/βIII tubulin, a neuronal isotype overexpressed in many tumors, proportionally tunes the dynamics of α1B/βI+βIVb microtubules. Our study is an important step toward understanding how tubulin isoform composition tunes microtubule dynamics. | |||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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| PDBx/mmCIF format | 5n5n.cif.gz | 966.1 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb5n5n.ent.gz | 799.9 KB | Display | PDB format |
| PDBx/mmJSON format | 5n5n.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/n5/5n5n ftp://data.pdbj.org/pub/pdb/validation_reports/n5/5n5n | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 3589MC 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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| Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: _ / Beg auth comp-ID: MET / Beg label comp-ID: MET / Refine code: _
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About Yorodumi



Homo sapiens (human)
United Kingdom,
United States, 2items
Citation
UCSF Chimera









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