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- EMDB-8150: Structure and dynamics of single-isoform recombinant neuronal hum... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-8150 | ||||||||||||
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Title | Structure and dynamics of single-isoform recombinant neuronal human tubulin | ||||||||||||
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![]() | microtubules / tubulin / single isoform / recombinant / dynamic instability / STRUCTURAL PROTEIN | ||||||||||||
Function / homology | ![]() netrin receptor binding / Post-chaperonin tubulin folding pathway / organelle transport along microtubule / dorsal root ganglion development / axonemal microtubule / Cilium Assembly / cytoskeleton-dependent intracellular transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Carboxyterminal post-translational modifications of tubulin / forebrain morphogenesis ...netrin receptor binding / Post-chaperonin tubulin folding pathway / organelle transport along microtubule / dorsal root ganglion development / axonemal microtubule / Cilium Assembly / cytoskeleton-dependent intracellular transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Carboxyterminal post-translational modifications of tubulin / forebrain morphogenesis / glial cell differentiation / Intraflagellar transport / neuron projection arborization / Sealing of the nuclear envelope (NE) by ESCRT-III / cerebellar cortex morphogenesis / flagellated sperm motility / Formation of tubulin folding intermediates by CCT/TriC / dentate gyrus development / Gap junction assembly / Prefoldin mediated transfer of substrate to CCT/TriC / COPI-independent Golgi-to-ER retrograde traffic / Kinesins / centrosome cycle / Assembly and cell surface presentation of NMDA receptors / pyramidal neuron differentiation / motor behavior / COPI-dependent Golgi-to-ER retrograde traffic / smoothened signaling pathway / response to L-glutamate / regulation of synapse organization / startle response / locomotory exploration behavior / Recycling pathway of L1 / microtubule polymerization / sperm flagellum / response to tumor necrosis factor / RHO GTPases activate IQGAPs / microtubule-based process / intercellular bridge / Hedgehog 'off' state / response to mechanical stimulus / Activation of AMPK downstream of NMDARs / COPI-mediated anterograde transport / condensed chromosome / homeostasis of number of cells within a tissue / 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 / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / Resolution of Sister Chromatid Cohesion / peptide binding / cellular response to calcium ion / axon guidance / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / adult locomotory behavior / AURKA Activation by TPX2 / cell periphery / Translocation of SLC2A4 (GLUT4) to the plasma membrane / filopodium / intracellular protein transport / RHO GTPases Activate Formins / synapse organization / neuromuscular junction / visual learning / PKR-mediated signaling / recycling endosome / cerebral cortex development / structural constituent of cytoskeleton / memory / microtubule cytoskeleton organization / cytoplasmic ribonucleoprotein granule / HCMV Early Events / neuron migration / Aggrephagy / mitotic spindle / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Regulation of PLK1 Activity at G2/M Transition / mitotic cell cycle / lamellipodium / microtubule cytoskeleton / growth cone / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / neuron apoptotic process / gene expression / microtubule / hydrolase activity / cilium / protein heterodimerization activity / axon / cell division / neuronal cell body / GTPase activity / dendrite / protein-containing complex binding / GTP binding Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | helical reconstruction / cryo EM / Resolution: 4.0 Å | ||||||||||||
![]() | Vemu A / Atherton J | ||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structure and Dynamics of Single-isoform Recombinant Neuronal Human Tubulin. Authors: Annapurna Vemu / Joseph Atherton / Jeffrey O Spector / Agnieszka Szyk / Carolyn A Moores / Antonina Roll-Mecak / ![]() ![]() Abstract: Microtubules are polymers that cycle stochastically between polymerization and depolymerization, i.e. they exhibit "dynamic instability." This behavior is crucial for cell division, motility, and ...Microtubules are polymers that cycle stochastically between polymerization and depolymerization, i.e. they exhibit "dynamic instability." This behavior is crucial for cell division, motility, and differentiation. Although studies in the last decade have made fundamental breakthroughs in our understanding of how cellular effectors modulate microtubule dynamics, analysis of the relationship between tubulin sequence, structure, and dynamics has been held back by a lack of dynamics measurements with and structural characterization of homogeneous isotypically pure engineered tubulin. Here, we report for the first time the cryo-EM structure and in vitro dynamics parameters of recombinant isotypically pure human tubulin. α1A/βIII is a purely neuronal tubulin isoform. The 4.2-Å structure of post-translationally unmodified human α1A/βIII microtubules shows overall similarity to that of heterogeneous brain microtubules, but it is distinguished by subtle differences at polymerization interfaces, which are hot spots for sequence divergence between tubulin isoforms. In vitro dynamics assays show that, like mosaic brain microtubules, recombinant homogeneous microtubules undergo dynamic instability, but they polymerize slower and have fewer catastrophes. Interestingly, we find that epitaxial growth of α1A/βIII microtubules from heterogeneous brain seeds is inefficient but can be fully rescued by incorporating as little as 5% of brain tubulin into the homogeneous α1A/βIII lattice. Our study establishes a system to examine the structure and dynamics of mammalian microtubules with well defined tubulin species and is a first and necessary step toward uncovering how tubulin genetic and chemical diversity is exploited to modulate intrinsic microtubule dynamics. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 1.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 13 KB 13 KB | Display Display | ![]() |
Images | ![]() | 234.8 KB | ||
Filedesc metadata | ![]() | 6.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 5jcoMC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 487.7 Data #1: Unaligned frame stacks of GMPCPP-bound alpha1a beta3 recombinant tubulin microtubules [micrographs - multiframe]) |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | None | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. generated in cubic-lattice coordinate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.22 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 : Microtubules
Entire | Name: Microtubules |
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Components |
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-Supramolecule #1: Microtubules
Supramolecule | Name: Microtubules / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 Details: 14pf GMPCPP-bound microtubule composed of human beta3 and alpha1a tubulin |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 110 kDa/nm |
-Macromolecule #1: Tubulin beta-3 chain
Macromolecule | Name: Tubulin beta-3 chain / type: protein_or_peptide / ID: 1 / Number of copies: 6 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 47.809926 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPSGNYVGDS DLQLERISVY YNEASSHKYV PRAILVDLEP GTMDSVRSGA FGHLFRPDN FIFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKECENCDC LQGFQLTHSL GGGTGSGMGT LLISKVREEY P DRIMNTFS ...String: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPSGNYVGDS DLQLERISVY YNEASSHKYV PRAILVDLEP GTMDSVRSGA FGHLFRPDN FIFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKECENCDC LQGFQLTHSL GGGTGSGMGT LLISKVREEY P DRIMNTFS VVPSPKVSDT VVEPYNATLS IHQLVENTDE TYCIDNEALY DICFRTLKLA TPTYGDLNHL VSATMSGVTT SL RFPGQLN ADLRKLAVNM VPFPRLHFFM PGFAPLTARG SQQYRALTVP ELTQQMFDAK NMMAACDPRH GRYLTVATVF RGR MSMKEV DEQMLAIQSK NSSYFVEWIP NNVKVAVCDI PPRGLKMSST FIGNSTAIQE LFKRISEQFT AMFRRKAFLH WYTG EGMDE MEFTEAESNM NDLVSEYQQY Q UniProtKB: Tubulin beta-3 chain |
-Macromolecule #2: Tubulin alpha-1A chain
Macromolecule | Name: Tubulin alpha-1A chain / type: protein_or_peptide / ID: 2 / Number of copies: 6 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 48.649023 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE ...String: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE FSIYPAPQVS TAVVEPYNSI LTTHTTLEHS DCAFMVDNEA IYDICRRNLD IERPTYTNLN RLIGQIVSSI TA SLRFDGA LNVDLTEFQT NLVPYPRIHF PLATYAPVIS AEKAYHEQLS VAEITNACFE PANQMVKCDP RHGKYMACCL LYR GDVVPK DVNAAIATIK TKRTIQFVDW CPTGFKVGIN YQPPTVVPGG DLAKVQRAVC MLSNTTAIAE AWARLDHKFD LMYA KRAFV HWYVGEGMEE GEFSEAREDM AALEKDYEEV GV UniProtKB: Tubulin alpha-1A chain |
-Macromolecule #3: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
Macromolecule | Name: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / type: ligand / ID: 3 / Number of copies: 6 / Formula: G2P |
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Molecular weight | Theoretical: 521.208 Da |
Chemical component information | ![]() ChemComp-G2P: |
-Macromolecule #4: MAGNESIUM ION
Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 4 / Number of copies: 12 / Formula: MG |
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Molecular weight | Theoretical: 24.305 Da |
-Macromolecule #5: GUANOSINE-5'-TRIPHOSPHATE
Macromolecule | Name: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 5 / Number of copies: 6 / Formula: GTP |
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Molecular weight | Theoretical: 523.18 Da |
Chemical component information | ![]() ChemComp-GTP: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Buffer | pH: 6.9 / Component - Name: BRB80 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI POLARA 300 |
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Image recording | Film or detector model: DIRECT ELECTRON DE-20 (5k x 3k) / Detector mode: INTEGRATING / Average electron dose: 25.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Applied symmetry - Helical parameters - Δz: 8.86 Å Applied symmetry - Helical parameters - Δ&Phi: -25.71 ° Applied symmetry - Helical parameters - Axial symmetry: C14 (14 fold cyclic) Resolution.type: BY AUTHOR / Resolution: 4.0 Å / Resolution method: OTHER Details: Overall map resolution was 4.2 Angstrom by gold-standard FSCtrue (Chen et al., 2013). The tubulin portion of the map was at higher resolution: at least 4 Angstrom according to the Blocres resolution measure. Number images used: 10164 |
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Startup model | Type of model: OTHER / Details: Synthetic Kinesin Decorated Microtubule |
Final angle assignment | Type: NOT APPLICABLE |