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- PDB-6evw: Cryo-EM structure of GMPCPP-microtubule co-polymerised with doubl... -

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Basic information

Entry
Database: PDB / ID: 6evw
TitleCryo-EM structure of GMPCPP-microtubule co-polymerised with doublecortin
Components
  • Tubulin alpha-1B chain
  • Tubulin beta chain
KeywordsSTRUCTURAL PROTEIN / microtubule / GTPase / tubulin
Function / homology
Function and homology information


Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling ...Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / COPI-mediated anterograde transport / structural constituent of cytoskeleton / microtubule cytoskeleton organization / microtubule cytoskeleton / mitotic cell cycle / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / GTPase activity / GTP binding / metal ion binding / cytoplasm
Similarity search - Function
Alpha tubulin / Tubulin-beta mRNA autoregulation signal. / 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 ...Alpha tubulin / Tubulin-beta mRNA autoregulation signal. / 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
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / GUANOSINE-5'-TRIPHOSPHATE / Tubulin beta chain / Tubulin alpha-1B chain
Similarity search - Component
Biological speciesSus scrofa (pig)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsManka, S.W.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Medical Research Council (United Kingdom) United Kingdom
CitationJournal: Nat Struct Mol Biol / Year: 2018
Title: The role of tubulin-tubulin lattice contacts in the mechanism of microtubule dynamic instability.
Authors: Szymon W Manka / Carolyn A Moores /
Abstract: Microtubules form from longitudinally and laterally assembling tubulin α-β dimers. The assembly induces strain in tubulin, resulting in cycles of microtubule catastrophe and regrowth. This 'dynamic ...Microtubules form from longitudinally and laterally assembling tubulin α-β dimers. The assembly induces strain in tubulin, resulting in cycles of microtubule catastrophe and regrowth. This 'dynamic instability' is governed by GTP hydrolysis that renders the microtubule lattice unstable, but it is unclear how. We used a human microtubule nucleating and stabilizing neuronal protein, doublecortin, and high-resolution cryo-EM to capture tubulin's elusive hydrolysis intermediate GDP•Pi state, alongside the prehydrolysis analog GMPCPP state and the posthydrolysis GDP state with and without an anticancer drug, Taxol. GTP hydrolysis to GDP•Pi followed by Pi release constitutes two distinct structural transitions, causing unevenly distributed compressions of tubulin dimers, thereby tightening longitudinal and loosening lateral interdimer contacts. We conclude that microtubule catastrophe is triggered because the lateral contacts can no longer counteract the strain energy stored in the lattice, while reinforcement of the longitudinal contacts may support generation of force.
History
DepositionNov 2, 2017Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 4, 2018Provider: repository / Type: Initial release
Revision 1.1Jul 11, 2018Group: Data collection / Database references / Category: citation
Item: _citation.journal_abbrev / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jul 25, 2018Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 2.0Dec 19, 2018Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations / Polymer sequence / Source and taxonomy / Structure summary
Category: entity / entity_poly ...entity / entity_poly / entity_poly_seq / entity_src_nat / pdbx_poly_seq_scheme / pdbx_struct_assembly / pdbx_struct_oper_list / pdbx_unobs_or_zero_occ_residues / struct_ref_seq_dif
Item: _entity.formula_weight / _entity_poly.nstd_monomer ..._entity.formula_weight / _entity_poly.nstd_monomer / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_src_nat.pdbx_end_seq_num / _pdbx_struct_assembly.details / _pdbx_struct_oper_list.symmetry_operation
Revision 2.1Dec 11, 2019Group: Other / Category: atom_sites
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3]
Revision 2.2May 15, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_label_asym_id

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Structure visualization

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Assembly

Deposited unit
E: Tubulin alpha-1B chain
J: Tubulin alpha-1B chain
C: Tubulin alpha-1B chain
L: Tubulin alpha-1B chain
A: Tubulin alpha-1B chain
K: Tubulin alpha-1B chain
B: Tubulin beta chain
F: Tubulin beta chain
G: Tubulin beta chain
D: Tubulin beta chain
I: Tubulin beta chain
H: Tubulin beta chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)587,91736
Polymers581,35912
Non-polymers6,55824
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area50970 Å2
ΔGint-324 kcal/mol
Surface area179280 Å2
MethodPISA

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Components

#1: Protein
Tubulin alpha-1B chain / Alpha-tubulin ubiquitous / Tubulin K-alpha-1 / Tubulin alpha-ubiquitous chain


Mass: 48780.117 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: Q2XVP4
#2: Protein
Tubulin beta chain / Beta-tubulin


Mass: 48113.129 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: P02554
#3: Chemical
ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE


Mass: 523.180 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Comment: GTP, energy-carrying molecule*YM
#4: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: Mg
#5: Chemical
ChemComp-G2P / PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER


Mass: 521.208 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C11H18N5O13P3 / Comment: GMP-CPP, energy-carrying molecule analogue*YM

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: 13-PF GMPCPP-microtubule co-polymerised with doublecortin (DCX)
Type: COMPLEX / Entity ID: #1-#2 / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: sus sucrofa (pig)
Buffer solutionpH: 6.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company
MicroscopyModel: FEI POLARA 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: OTHER
Image recordingElectron dose: 25 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.11_2567: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 38928 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00441454
ELECTRON MICROSCOPYf_angle_d0.71256328
ELECTRON MICROSCOPYf_dihedral_angle_d5.50524756
ELECTRON MICROSCOPYf_chiral_restr0.0496162
ELECTRON MICROSCOPYf_plane_restr0.0067506

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