Human tau tubulin kinase 1 (TTBK1) complexed with 3-({5-[(4-amino-4-methylpiperidin-1-yl)methyl]pyrrolo[2,1-f][1,2,4]triazin-4-yl}amino)-5-bromophenol

Experimental Data Snapshot

  • Resolution: 1.42 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

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The structure of human tau-tubulin kinase 1 both in the apo form and in complex with an inhibitor.

Kiefer, S.E.Chang, C.J.Kimura, S.R.Gao, M.Xie, D.Zhang, Y.Zhang, G.Gill, M.B.Mastalerz, H.Thompson, L.A.Cacace, A.M.Sheriff, S.

(2014) Acta Crystallogr Sect F Struct Biol Cryst Commun 70: 173-181

  • DOI: https://doi.org/10.1107/S2053230X14000144
  • Primary Citation of Related Structures:  
    4NFM, 4NFN

  • PubMed Abstract: 

    Tau-tubulin kinase 1 (TTBK1) is a dual-specificity (serine/threonine and tyrosine) kinase belonging to the casein kinase 1 superfamily. TTBK1 is a neuron-specific kinase that regulates tau phosphorylation. Hyperphosphorylation of tau is implicated in the pathogenesis of Alzheimer's disease. Two kinase-domain constructs of TTBK1 were expressed in a baculovirus-infected insect-cell system and purified. The purified TTBK1 kinase-domain proteins were crystallized using the hanging-drop vapor-diffusion method. X-ray diffraction data were collected and the structure of TTBK1 was determined by molecular replacement both as an apo structure and in complex with a kinase inhibitor.

  • Organizational Affiliation

    Molecular Discovery Technologies, Bristol-Myers Squibb Research and Development, PO Box 4000, Princeton, NJ 08543-4000, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tau-tubulin kinase 1309Homo sapiensMutation(s): 0 
Gene Names: TTBK1BDTKKIAA1855
UniProt & NIH Common Fund Data Resources
Find proteins for Q5TCY1 (Homo sapiens)
Explore Q5TCY1 
Go to UniProtKB:  Q5TCY1
GTEx:  ENSG00000146216 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5TCY1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.42 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 169.49α = 90
b = 39.91β = 105.34
c = 50.53γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2014-02-05 
  • Deposition Author(s): Sheriff, S.

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-05
    Type: Initial release
  • Version 1.1: 2014-04-02
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description