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- EMDB-16435: microtubule decorated with tubulin oligomers in presence of APC C... -

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Basic information

Entry
Database: EMDB / ID: EMD-16435
Titlemicrotubule decorated with tubulin oligomers in presence of APC C-terminal domain. (here only the microtubule map section is represented)
Map data
Sample
  • Complex: microtubule
    • Protein or peptide: Tubulin beta chain
    • Protein or peptide: Tubulin alpha-1B chain
  • Ligand: TAXOLPaclitaxel
  • Ligand: GUANOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION
  • Ligand: GUANOSINE-5'-TRIPHOSPHATEGuanosine triphosphate
Function / homology
Function and homology information


Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Intraflagellar transport / Carboxyterminal post-translational modifications of tubulin / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / COPI-dependent Golgi-to-ER retrograde traffic ...Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Intraflagellar transport / Carboxyterminal post-translational modifications of tubulin / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / COPI-dependent Golgi-to-ER retrograde traffic / RHO GTPases activate IQGAPs / COPI-independent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / RHO GTPases Activate Formins / MHC class II antigen presentation / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Aggrephagy / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / Recruitment of NuMA to mitotic centrosomes / Hedgehog 'off' state / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / neuron migration / structural constituent of cytoskeleton / microtubule cytoskeleton organization / microtubule cytoskeleton / mitotic cell cycle / microtubule / GTPase activity / GTP binding / metal ion binding / cytosol / 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 beta chain / Tubulin alpha-1B chain
Similarity search - Component
Biological speciesBos taurus (cattle) / cattle (cattle)
Methodhelical reconstruction / cryo EM / Resolution: 5.3 Å
AuthorsSerre L / Arnal I
Funding support France, 1 items
OrganizationGrant numberCountry
ATIP-Avenir France
CitationJournal: J Cell Sci / Year: 2023
Title: The mitotic role of adenomatous polyposis coli requires its bilateral interaction with tubulin and microtubules.
Authors: Laurence Serre / Julie Delaroche / Angélique Vinit / Guy Schoehn / Eric Denarier / Anne Fourest-Lieuvin / Isabelle Arnal /
Abstract: Adenomatous polyposis coli (APC) is a scaffold protein with tumour suppressor properties. Mutations causing the loss of its C-terminal domain (APC-C), which bears cytoskeleton-regulating sequences, ...Adenomatous polyposis coli (APC) is a scaffold protein with tumour suppressor properties. Mutations causing the loss of its C-terminal domain (APC-C), which bears cytoskeleton-regulating sequences, correlate with colorectal cancer. The cellular roles of APC in mitosis are widely studied, but the molecular mechanisms of its interaction with the cytoskeleton are poorly understood. Here, we investigated how APC-C regulates microtubule properties, and found that it promotes both microtubule growth and shrinkage. Strikingly, APC-C accumulates at shrinking microtubule extremities, a common characteristic of depolymerases. Cryo-electron microscopy revealed that APC-C adopts an extended conformation along the protofilament crest and showed the presence of ring-like tubulin oligomers around the microtubule wall, which required the presence of two APC-C sub-domains. A mutant of APC-C that was incapable of decorating microtubules with ring-like tubulin oligomers exhibited a reduced effect on microtubule dynamics. Finally, whereas native APC-C rescued defective chromosome alignment in metaphase cells silenced for APC, the ring-incompetent mutant failed to correct mitotic defects. Thus, the bilateral interaction of APC-C with tubulin and microtubules likely contributes to its mitotic functions.
History
DepositionJan 6, 2023-
Header (metadata) releaseJan 25, 2023-
Map releaseJan 25, 2023-
UpdateFeb 1, 2023-
Current statusFeb 1, 2023Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_16435.png

Downloads & links

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Map

FileDownload / File: emd_16435.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.96 Å/pix.
x 320 pix.
= 627.2 Å		1.96 Å/pix.
x 320 pix.
= 627.2 Å		1.96 Å/pix.
x 320 pix.
= 627.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.96 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.006
Minimum - Maximum-0.15672222 - 0.16726041
Average (Standard dev.)0.00015105102 (±0.004165196)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 627.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_16435_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_16435_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_16435_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : microtubule

EntireName: microtubule
Components
  • Complex: microtubule
    • Protein or peptide: Tubulin beta chain
    • Protein or peptide: Tubulin alpha-1B chain
  • Ligand: TAXOLPaclitaxel
  • Ligand: GUANOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION
  • Ligand: GUANOSINE-5'-TRIPHOSPHATEGuanosine triphosphate

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Supramolecule #1: microtubule

SupramoleculeName: microtubule / type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Bos taurus (cattle)

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Macromolecule #1: Tubulin beta chain

MacromoleculeName: Tubulin beta chain / type: protein_or_peptide / ID: 1 / Number of copies: 26 / Enantiomer: LEVO
Source (natural)Organism: cattle (cattle) / Organ: brain
Molecular weightTheoretical: 50.019922 KDa
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 QDATADEQGE GHEDEEKDEG G

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Macromolecule #2: Tubulin alpha-1B chain

MacromoleculeName: Tubulin alpha-1B chain / type: protein_or_peptide / ID: 2 / Number of copies: 26 / Enantiomer: LEVO
Source (natural)Organism: cattle (cattle) / Organ: brain
Molecular weightTheoretical: 50.204445 KDa
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 GVDSVEGEGE EEGEEY

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Macromolecule #3: TAXOL

MacromoleculeName: TAXOL / type: ligand / ID: 3 / Number of copies: 13 / Formula: TA1
Molecular weightTheoretical: 853.906 Da
Chemical component information

ChemComp-TA1:
TAXOL / medication, chemotherapy*YM / Paclitaxel

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Macromolecule #4: GUANOSINE-5'-DIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-DIPHOSPHATE / type: ligand / ID: 4 / Number of copies: 13 / Formula: GDP
Molecular weightTheoretical: 443.201 Da
Chemical component information

ChemComp-GDP:
GUANOSINE-5'-DIPHOSPHATE / GDP, energy-carrying molecule*YM / Guanosine diphosphate

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Macromolecule #5: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 5 / Number of copies: 13 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #6: GUANOSINE-5'-TRIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 6 / Number of copies: 13 / Formula: GTP
Molecular weightTheoretical: 523.18 Da
Chemical component information

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

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

BufferpH: 6.75
Component:
ConcentrationFormulaName
80.0 mMPiPesPiPES
1.0 mMEGTAEGTA
1.0 mMMgCl2magnesium chloride
50.0 mMKClpotassieum chloride
GridModel: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 37 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS GLACIOS
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm
Image recordingFilm or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 40.0 e/Å2

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Image processing

Startup modelType of model: OTHER / Details: MAP from MIRP pipeline (cook et al. 2020)
Final angle assignmentType: NOT APPLICABLE
Final reconstructionApplied symmetry - Helical parameters - Δz: 9.54 Å
Applied symmetry - Helical parameters - Δ&Phi: -27.68 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 5.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Details: resolution deduced from unmasked FSC is 7.1 A / Number images used: 11670

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