TLK2 kinase domain from human

Experimental Data Snapshot

  • Resolution: 2.86 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 

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Molecular basis of Tousled-Like Kinase 2 activation.

Mortuza, G.B.Hermida, D.Pedersen, A.K.Segura-Bayona, S.Lopez-Mendez, B.Redondo, P.Ruther, P.Pozdnyakova, I.Garrote, A.M.Munoz, I.G.Villamor-Paya, M.Jauset, C.Olsen, J.V.Stracker, T.H.Montoya, G.

(2018) Nat Commun 9: 2535-2535

  • DOI: https://doi.org/10.1038/s41467-018-04941-y
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Tousled-like kinases (TLKs) are required for genome stability and normal development in numerous organisms and have been implicated in breast cancer and intellectual disability. In humans, the similar TLK1 and TLK2 interact with each other and TLK activity enhances ASF1 histone binding and is inhibited by the DNA damage response, although the molecular mechanisms of TLK regulation remain unclear. Here we describe the crystal structure of the TLK2 kinase domain. We show that the coiled-coil domains mediate dimerization and are essential for activation through ordered autophosphorylation that promotes higher order oligomers that locally increase TLK2 activity. We show that TLK2 mutations involved in intellectual disability impair kinase activity, and the docking of several small-molecule inhibitors of TLK activity suggest that the crystal structure will be useful for guiding the rationale design of new inhibition strategies. Together our results provide insights into the structure and molecular regulation of the TLKs.

  • Organizational Affiliation

    Structural Molecular Biology Group, Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen, Denmark.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase tousled-like 2579Homo sapiensMutation(s): 0 
Gene Names: TLK2
UniProt & NIH Common Fund Data Resources
Find proteins for Q86UE8 (Homo sapiens)
Explore Q86UE8 
Go to UniProtKB:  Q86UE8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86UE8
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on AGS

Download Ideal Coordinates CCD File 
C10 H16 N5 O12 P3 S
Experimental Data & Validation

Experimental Data

  • Resolution: 2.86 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.02α = 90
b = 126.02β = 90
c = 126.02γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-30
    Type: Initial release
  • Version 1.1: 2018-07-25
    Changes: Data collection, Database references