5DE2

Structural mechanism of Nek7 activation by Nek9-induced dimerisation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Mechanistic basis of Nek7 activation through Nek9 binding and induced dimerization.

Haq, T.Richards, M.W.Burgess, S.G.Gallego, P.Yeoh, S.O'Regan, L.Reverter, D.Roig, J.Fry, A.M.Bayliss, R.

(2015) Nat Commun 6: 8771-8771

  • DOI: 10.1038/ncomms9771

  • PubMed Abstract: 
  • Mitotic spindle assembly requires the regulated activities of protein kinases such as Nek7 and Nek9. Nek7 is autoinhibited by the protrusion of Tyr97 into the active site and activated by the Nek9 non-catalytic C-terminal domain (CTD). CTD binding ap ...

    Mitotic spindle assembly requires the regulated activities of protein kinases such as Nek7 and Nek9. Nek7 is autoinhibited by the protrusion of Tyr97 into the active site and activated by the Nek9 non-catalytic C-terminal domain (CTD). CTD binding apparently releases autoinhibition because mutation of Tyr97 to phenylalanine increases Nek7 activity independently of Nek9. Here we find that self-association of the Nek9-CTD is needed for Nek7 activation. We map the minimal Nek7 binding region of Nek9 to residues 810-828. A crystal structure of Nek7(Y97F) bound to Nek9(810-828) reveals a binding site on the C-lobe of the Nek7 kinase domain. Nek7(Y97F) crystallizes as a back-to-back dimer between kinase domain N-lobes, in which the specific contacts within the interface are coupled to the conformation of residue 97. Hence, we propose that the Nek9-CTD activates Nek7 through promoting back-to-back dimerization that releases the autoinhibitory tyrosine residue, a mechanism conserved in unrelated kinase families.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, Lancaster Road, Leicester LE1 9HN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase Nek7
A, B
310Homo sapiensMutation(s): 1 
Gene Names: NEK7
EC: 2.7.11.1
Find proteins for Q8TDX7 (Homo sapiens)
Go to Gene View: NEK7
Go to UniProtKB:  Q8TDX7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase Nek9
C, D
19Mus musculusMutation(s): 0 
Gene Names: Nek9 (Nercc)
EC: 2.7.11.1
Find proteins for Q8K1R7 (Mus musculus)
Go to UniProtKB:  Q8K1R7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.206 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 88.120α = 90.00
b = 88.120β = 90.00
c = 155.610γ = 120.00
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
BUSTERrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-08-25 
  • Released Date: 2015-11-11 
  • Deposition Author(s): Haq, T., Bayliss, R.

Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomC24461/ A12772

Revision History 

  • Version 1.0: 2015-11-11
    Type: Initial release