6I2I

Refined 13pf Hela Cell Tubulin microtubule (EML4-NTD decorated)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Mitotic phosphorylation by NEK6 and NEK7 reduces the microtubule affinity of EML4 to promote chromosome congression.

Adib, R.Montgomery, J.M.Atherton, J.O'Regan, L.Richards, M.W.Straatman, K.R.Roth, D.Straube, A.Bayliss, R.Moores, C.A.Fry, A.M.

(2019) Sci.Signal. 12: --

  • DOI: 10.1126/scisignal.aaw2939

  • PubMed Abstract: 
  • EML4 is a microtubule-associated protein that promotes microtubule stability. We investigated its regulation across the cell cycle and found that EML4 was distributed as punctate foci along the microtubule lattice in interphase but exhibited reduced ...

    EML4 is a microtubule-associated protein that promotes microtubule stability. We investigated its regulation across the cell cycle and found that EML4 was distributed as punctate foci along the microtubule lattice in interphase but exhibited reduced association with spindle microtubules in mitosis. Microtubule sedimentation and cryo-electron microscopy with 3D reconstruction revealed that the basic N-terminal domain of EML4 mediated its binding to the acidic C-terminal tails of α- and β-tubulin on the microtubule surface. The mitotic kinases NEK6 and NEK7 phosphorylated the EML4 N-terminal domain at Ser 144 and Ser 146 in vitro, and depletion of these kinases in cells led to increased EML4 binding to microtubules in mitosis. An S144A-S146A double mutant not only bound inappropriately to mitotic microtubules but also increased their stability and interfered with chromosome congression. In addition, constitutive activation of NEK6 or NEK7 reduced the association of EML4 with interphase microtubules. Together, these data support a model in which NEK6- and NEK7-dependent phosphorylation promotes the dissociation of EML4 from microtubules in mitosis in a manner that is required for efficient chromosome congression.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of Leicester, Lancaster Road, Leicester LE1 9HN, UK. amf5@le.ac.uk.,Institute of Structural and Molecular Biology, Birkbeck College, Malet Street, London WC1E 7HX, UK.,Centre for Core Biotechnology Services, University of Leicester, University Road, Leicester LE1 7RH, UK.,Centre for Mechanochemical Cell Biology and Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK.,Department of Molecular and Cell Biology, University of Leicester, Lancaster Road, Leicester LE1 9HN, UK.,Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha-1B chain
A
451Homo sapiensMutation(s): 0 
Gene Names: TUBA1B
Find proteins for P68363 (Homo sapiens)
Go to Gene View: TUBA1B
Go to UniProtKB:  P68363
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta chain
B
444Homo sapiensMutation(s): 0 
Gene Names: TUBB (TUBB5)
Find proteins for P07437 (Homo sapiens)
Go to Gene View: TUBB
Go to UniProtKB:  P07437
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

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Download CCD File 
A
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
G2P
Query on G2P

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Download CCD File 
B
PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
C11 H18 N5 O13 P3
GXTIEXDFEKYVGY-KQYNXXCUSA-N
 Ligand Interaction
TA1
Query on TA1

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Download CCD File 
B
TAXOL
C47 H51 N O14
RCINICONZNJXQF-MZXODVADSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom204801/Z/16/Z
United Kingdom16-0119
Medical Research Council (United Kingdom)United KingdomMR/R000352/1

Revision History 

  • Version 1.0: 2019-08-28
    Type: Initial release
  • Version 1.1: 2019-12-18
    Type: Other