6EVZ

Cryo-EM structure of GDP-microtubule co-polymerised with doublecortin

  • Classification: STRUCTURAL PROTEIN
  • Organism(s): Sus scrofa

  • Deposited: 2017-11-03 Released: 2018-07-04 
  • Deposition Author(s): Manka, S.W.
  • Funding Organization(s): Medical Research Council (United Kingdom) 

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.8 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The role of tubulin-tubulin lattice contacts in the mechanism of microtubule dynamic instability.

Manka, S.W.Moores, C.A.

(2018) Nat. Struct. Mol. Biol. 25: 607-615

  • DOI: 10.1038/s41594-018-0087-8
  • Primary Citation of Related Structures:  

  • PubMed 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 instability' is governed by GTP hydrolysis that rend ...

    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.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck, University of London, London, UK. s.manka@mail.cryst.bbk.ac.uk.,Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck, University of London, London, UK. c.moores@mail.cryst.bbk.ac.uk.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta chain
F, G, D, I, B, H
445Sus scrofaMutation(s): 0 
Find proteins for P02554 (Sus scrofa)
Go to UniProtKB:  P02554
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha-1B chain
A, E, J, C, L, K
451Sus scrofaMutation(s): 0 
Gene Names: TUBA1B
Find proteins for Q2XVP4 (Sus scrofa)
Go to Gene View: TUBA1B
Go to UniProtKB:  Q2XVP4
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
B, D, F, G, H, I
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
GTP
Query on GTP

Download SDF File 
Download CCD File 
A, C, E, J, K, L
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, C, E, J, K, L
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.8 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-11-03 
  • Released Date: 2018-07-04 
  • Deposition Author(s): Manka, S.W.

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United Kingdom--

Revision History 

  • Version 1.0: 2018-07-04
    Type: Initial release
  • Version 1.1: 2018-07-11
    Type: Data collection, Database references
  • Version 1.2: 2018-07-25
    Type: Data collection, Database references