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- EMDB-8998: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubules decorated ... -

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Entry
Database: EMDB / ID: EMD-8998
Title14-pf 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain
Map data14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain.
Sample
  • Complex: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated with kinesin-1 motor domain
    • Protein or peptide: Tubulin beta-2B chain
    • Protein or peptide: Tubulin alpha-1B chain
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
  • Ligand: GUANOSINE-5'-TRIPHOSPHATE
Keywordscytoskeleton / microtubules / recombinant human tubulin / tubulin isotype / STRUCTURAL PROTEIN
Function / homology
Function and homology information


Post-chaperonin tubulin folding pathway / Cilium Assembly / cytoskeleton-dependent intracellular transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / 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 / embryonic brain development / Gap junction assembly ...Post-chaperonin tubulin folding pathway / Cilium Assembly / cytoskeleton-dependent intracellular transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / 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 / embryonic brain development / Gap junction assembly / Prefoldin mediated transfer of substrate to CCT/TriC / COPI-independent Golgi-to-ER retrograde traffic / Kinesins / positive regulation of axon guidance / Assembly and cell surface presentation of NMDA receptors / COPI-dependent Golgi-to-ER retrograde traffic / Recycling pathway of L1 / RHOH GTPase cycle / RHO GTPases activate IQGAPs / microtubule-based process / intercellular bridge / Hedgehog 'off' state / Activation of AMPK downstream of NMDARs / cytoplasmic microtubule / COPI-mediated anterograde transport / 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 / cellular response to interleukin-4 / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Translocation of SLC2A4 (GLUT4) to the plasma membrane / RHO GTPases Activate Formins / modulation of chemical synaptic transmission / PKR-mediated signaling / Schaffer collateral - CA1 synapse / cerebral cortex development / structural constituent of cytoskeleton / microtubule cytoskeleton organization / HCMV Early Events / neuron migration / Aggrephagy / mitotic spindle / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / mitotic cell cycle / double-stranded RNA binding / microtubule cytoskeleton / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / cilium / protein heterodimerization activity / cell division / GTPase activity / ubiquitin protein ligase binding / GTP binding / structural molecule activity / metal ion binding / nucleus / cytoplasm
Similarity search - Function
Tubulin-beta mRNA autoregulation signal. / Alpha tubulin / Beta tubulin, autoregulation binding site / Beta tubulin / Tubulin / Tubulin, C-terminal / Tubulin C-terminal domain / Tubulin, conserved site / Tubulin subunits alpha, beta, and gamma signature. / Tubulin/FtsZ family, C-terminal domain ...Tubulin-beta mRNA autoregulation signal. / Alpha tubulin / Beta tubulin, autoregulation binding site / Beta tubulin / Tubulin / Tubulin, C-terminal / Tubulin C-terminal domain / Tubulin, conserved site / Tubulin subunits alpha, beta, and gamma signature. / Tubulin/FtsZ family, C-terminal domain / Tubulin/FtsZ-like, C-terminal domain / Tubulin/FtsZ, C-terminal / Tubulin/FtsZ, 2-layer sandwich domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ, GTPase domain / Tubulin/FtsZ, GTPase domain superfamily
Similarity search - Domain/homology
Tubulin alpha-1B chain / Tubulin beta-2B chain
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodhelical reconstruction / cryo EM / Resolution: 3.65 Å
AuthorsTi SC / Alushin GM
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)GM65933 United States
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)7DP5OD017885 United States
CitationJournal: Dev Cell / Year: 2018
Title: Human β-Tubulin Isotypes Can Regulate Microtubule Protofilament Number and Stability.
Authors: Shih-Chieh Ti / Gregory M Alushin / Tarun M Kapoor /
Abstract: Cell biological studies have shown that protofilament number, a fundamental feature of microtubules, can correlate with the expression of different tubulin isotypes. However, it is not known if ...Cell biological studies have shown that protofilament number, a fundamental feature of microtubules, can correlate with the expression of different tubulin isotypes. However, it is not known if tubulin isotypes directly control this basic microtubule property. Here, we report high-resolution cryo-EM reconstructions (3.5-3.65 Å) of purified human α1B/β3 and α1B/β2B microtubules and find that the β-tubulin isotype can determine protofilament number. Comparisons of atomic models of 13- and 14-protofilament microtubules reveal how tubulin subunit plasticity, manifested in "accordion-like" distributed structural changes, can accommodate distinct lattice organizations. Furthermore, compared to α1B/β3 microtubules, α1B/β2B filaments are more stable to passive disassembly and against depolymerization by MCAK or chTOG, microtubule-associated proteins with distinct mechanisms of action. Mixing tubulin isotypes in different proportions results in microtubules with protofilament numbers and stabilities intermediate to those of isotypically pure filaments. Together, our findings indicate that microtubule protofilament number and stability can be controlled through β-tubulin isotype composition.
History
DepositionJul 25, 2018-
Header (metadata) releaseOct 10, 2018-
Map releaseOct 10, 2018-
UpdateMar 13, 2024-
Current statusMar 13, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 5
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 5
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  • Surface view with fitted model
  • Atomic models: PDB-6e7c
  • Surface level: 5
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-6e7c
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_8998.png

Downloads & links

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Map

FileDownload / File: emd_8998.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotation14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain.
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1 Å/pix.
x 512 pix.
= 512. Å		1 Å/pix.
x 512 pix.
= 512. Å		1 Å/pix.
x 512 pix.
= 512. Å

Surface

Projections

Slices (1/3)

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 5.0 / Movie #1: 5
Minimum - Maximum-16.450619 - 29.930962000000001
Average (Standard dev.)0.22804831 (±1.1154988)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin-256-256-256
Dimensions512512512
Spacing512512512
CellA=B=C: 512.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z111
M x/y/z512512512
origin x/y/z0.0000.0000.000
length x/y/z512.000512.000512.000
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS-256-256-256
NC/NR/NS512512512
D min/max/mean-16.45129.9310.228

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Supplemental data

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Additional map: 14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1...

Fileemd_8998_additional_1.map
Annotation14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain.C1 symmetry reconstruction.
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Additional map: 14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1...

Fileemd_8998_additional_2.map
Annotation14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain.No b-factor map sharpening.
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: 14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1...

Fileemd_8998_half_map_1.map
Annotation14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain.EM even half map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: 14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1...

Fileemd_8998_half_map_2.map
Annotation14-PF 3-start GMPCPP-human alpha1B/beta2B microtubules decorated with kinesin-1 motor domain. EM odd half map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
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Histogram

Histogram (log scale)

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Sample components

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Entire : 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated w...

EntireName: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated with kinesin-1 motor domain
Components
  • Complex: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated with kinesin-1 motor domain
    • Protein or peptide: Tubulin beta-2B chain
    • Protein or peptide: Tubulin alpha-1B chain
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
  • Ligand: GUANOSINE-5'-TRIPHOSPHATE

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Supramolecule #1: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated w...

SupramoleculeName: 14-pf 3-start GMPCPP-human alpha1B/beta2B microtubule decorated with kinesin-1 motor domain
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Tubulin beta-2B chain

MacromoleculeName: Tubulin beta-2B chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 47.917977 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGSYHGDS DLQLERINVY YNEATGNKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKESESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS ...String:
MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGSYHGDS DLQLERINVY YNEATGNKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKESESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS VMPSPKVSDT VVEPYNATLS VHQLVENTDE TYCIDNEALY DICFRTLKLT TPTYGDLNHL VSATMSGVTT CL RFPGQLN ADLRKLAVNM VPFPRLHFFM PGFAPLTSRG SQQYRALTVP ELTQQMFDSK NMMAACDPRH GRYLTVAAIF RGR MSMKEV DEQMLNVQNK NSSYFVEWIP NNVKTAVCDI PPRGLKMSAT FIGNSTAIQE LFKRISEQFT AMFRRKAFLH WYTG EGMDE MEFTEAESNM NDLVSEYQQY Q

UniProtKB: Tubulin beta-2B chain

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Macromolecule #2: Tubulin alpha-1B chain

MacromoleculeName: Tubulin alpha-1B chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 48.665027 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: 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 RLISQIVSSI TA SLRFDGA LNVDLTEFQT NLVPYPRIHF PLATYAPVIS AEKAYHEQLS VAEITNACFE PANQMVKCDP RHGKYMACCL LYR GDVVPK DVNAAIATIK TKRSIQFVDW CPTGFKVGIN YQPPTVVPGG DLAKVQRAVC MLSNTTAIAE AWARLDHKFD LMYA KRAFV HWYVGEGMEE GEFSEAREDM AALEKDYEEV GV

UniProtKB: Tubulin alpha-1B chain

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Macromolecule #3: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 3 / Number of copies: 2 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #4: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER

MacromoleculeName: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / type: ligand / ID: 4 / Number of copies: 1 / Formula: G2P
Molecular weightTheoretical: 521.208 Da
Chemical component information

ChemComp-G2P:
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / GMP-CPP, energy-carrying molecule analogue*YM

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Macromolecule #5: GUANOSINE-5'-TRIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 5 / Number of copies: 1 / Formula: GTP
Molecular weightTheoretical: 523.18 Da
Chemical component information

ChemComp-GTP:
GUANOSINE-5'-TRIPHOSPHATE / GTP, energy-carrying molecule*YM

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statehelical array

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Sample preparation

BufferpH: 6.8
GridDetails: unspecified
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV
DetailsPseudo-helical microtubule lattice

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Frames/image: 2-50 / Average exposure time: 0.2 sec. / Average electron dose: 1.6 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 8.759 Å
Applied symmetry - Helical parameters - Δ&Phi: -25.71 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.65 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: FREALIGN (ver. 9.11) / Number images used: 46624
Startup modelType of model: EMDB MAP
EMDB ID:

6352

Final angle assignmentType: NOT APPLICABLE / Software - Name: FREALIGN (ver. 9.11)

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Atomic model buiding 1

Initial modelPDB ID:

3jat


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementProtocol: FLEXIBLE FIT
Output model

PDB-6e7c:
14-pf 3-start GMPCPP-human alpha1B/beta2B microtubules

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