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 generated by PISA (software)

Biological Assembly 2  

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

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

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 69.56 kDa 
• Atom Count: 4176 
• Modelled Residue Count: 535 
• Deposited Residue Count: 604 
• Unique protein chains: 1

4USD

Human STK10 (LOK) with SB-633825

• PDB DOI: 10.2210/pdb4USD/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-07-07 Released: 2015-07-22 
• Deposition Author(s): Elkins, J.M., Salah, E., Szklarz, M., von Delft, F., Canning, P., Raynor, J., Bountra, C., Edwards, A.M., Knapp, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.05 Å
• R-Value Free: 0.289 
• R-Value Work: 0.234 
• R-Value Observed: 0.237 

Literature

Comprehensive Characterization of the Published Kinase Inhibitor Set.

Elkins, J.M., Fedele, V., Szklarz, M., Abdul Azeez, K.R., Salah, E., Mikolajczyk, J., Romanov, S., Sepetov, N., Huang, X.P., Roth, B.L., Al Haj Zen, A., Fourches, D., Muratov, E., Tropsha, A., Morris, J., Teicher, B.A., Kunkel, M., Polley, E., Lackey, K.E., Atkinson, F.L., Overington, J.P., Bamborough, P., Moller, S., Price, D.J., Willson, T.M., Drewry, D.H., Knapp, S., Zuercher, W.J.

(2016) Nat Biotechnol 34: 95

• PubMed: 26501955 
• DOI: 10.1038/nbt.3374
• Primary Citation of Related Structures:  
  4USD, 4USE, 4USF


• PubMed Abstract: 
  

Despite the success of protein kinase inhibitors as approved therapeutics, drug discovery has focused on a small subset of kinase targets. Here we provide a thorough characterization of the Published Kinase Inhibitor Set (PKIS), a set of 367 small-molecule ATP-competitive kinase inhibitors that was recently made freely available with the aim of expanding research in this field and as an experiment in open-source target validation. We screen the set in activity assays with 224 recombinant kinases and 24 G protein-coupled receptors and in cellular assays of cancer cell proliferation and angiogenesis. We identify chemical starting points for designing new chemical probes of orphan kinases and illustrate the utility of these leads by developing a selective inhibitor for the previously untargeted kinases LOK and SLK. Our cellular screens reveal compounds that modulate cancer cell growth and angiogenesis in vitro. These reagents and associated data illustrate an efficient way forward to increasing understanding of the historically untargeted kinome.

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Organizational Affiliation: 

Chemical Sciences, GlaxoSmithKline, Research Triangle Park, North Carolina, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SERINE/THREONINE-PROTEIN KINASE 10	A, B	302	Homo sapiens	Mutation(s): 0  Gene Names: STK10, LOK EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O94804 (Homo sapiens) Explore O94804  Go to UniProtKB:  O94804
PHAROS:  O94804 GTEx:  ENSG00000072786

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
R09	C [auth A], D [auth B]	4-{5-(6-methoxynaphthalen-2-yl)-1-methyl-2-[2-methyl-4-(methylsulfonyl)phenyl]-1H-imidazol-4-yl}pyridine C28 H25 N3 O3 S ZDSNJSQTPLXCSG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.05 Å
• R-Value Free: 0.289 
• R-Value Work: 0.234 
• R-Value Observed: 0.237 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.72	α = 90
b = 99.6	β = 90
c = 151.77	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-07-07 
• Released Date: 2015-07-22 
Deposition Author(s): Elkins, J.M., Salah, E., Szklarz, M., von Delft, F., Canning, P., Raynor, J., Bountra, C., Edwards, A.M., Knapp, S.

Revision History  

• Version 1.0: 2015-07-22
  Type: Initial release
  
• Version 1.1: 2015-11-04
  Changes: Database references
• Version 1.2: 2016-01-20
  Changes: Database references
• Version 1.3: 2018-01-24
  Changes: Structure summary
• Version 1.4: 2018-09-19
  Changes: Data collection