Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36.18 kDa 
• Atom Count: 2579 
• Modelled Residue Count: 293 
• Deposited Residue Count: 309 
• Unique protein chains: 1

4NFN

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

• PDB DOI: 10.2210/pdb4NFN/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2013-10-31 Released: 2014-02-05 
• Deposition Author(s): Sheriff, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.42 Å
• R-Value Free: 0.209 
• R-Value Work: 0.185 
• R-Value Observed: 0.186 

Literature

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

• PubMed: 24637750 
• DOI: 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tau-tubulin kinase 1	A	309	Homo sapiens	Mutation(s): 0  Gene Names: TTBK1, BDTK, KIAA1855 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q5TCY1 (Homo sapiens) Explore Q5TCY1  Go to UniProtKB:  Q5TCY1
PHAROS:  Q5TCY1 GTEx:  ENSG00000146216

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
2KC	B [auth A]	3-({5-[(4-amino-4-methylpiperidin-1-yl)methyl]pyrrolo[2,1-f][1,2,4]triazin-4-yl}amino)-5-bromophenol C19 H23 Br N6 O DBMRETDBROLHGL-UHFFFAOYSA-N
SO4	C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Binding Affinity Annotations
ID	Source	Binding Affinity
2KC	Binding MOAD:  4NFN	IC50: 120 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• 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 = 169.49	α = 90
b = 39.91	β = 105.34
c = 50.53	γ = 90

Software Package:

Software Name	Purpose
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SCALA	data scaling
AMoRE	phasing
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-10-31 
• Released Date: 2014-02-05 
Deposition Author(s): Sheriff, S.

Revision History  

• Version 1.0: 2014-02-05
  Type: Initial release
  
• Version 1.1: 2014-04-02
  Changes: Database references