Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 32060.91 
• Atom Count: 2124 
• Residue Count: 272 
• Unique protein chains: 1

3MYG

Aurora A Kinase complexed with SCH 1473759

• DOI: 10.2210/pdb3MYG/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21


• Deposited: 2010-05-10 Released: 2010-07-21 
• Deposition Author(s): Hruza, A., Prosis, W., Ramanathan, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.4 Å
• R-Value Free: 0.245 
• R-Value Work: 0.221 

Literature

Discovery of a Potent, Injectable Inhibitor of Aurora Kinases Based on the Imidazo-[1,2-a]-Pyrazine Core.

Yu, T., Tagat, J.R., Kerekes, A.D., Doll, R.J., Zhang, Y., Xiao, Y., Esposite, S., Belanger, D.B., Curran, P.J., Mandal, A.K., Siddiqui, M.A., Shih, N.Y., Basso, A.D., Liu, M., Gray, K., Tevar, S., Jones, J., Lee, S., Liang, L., Ponery, S., Smith, E.B., Hruza, A., Voigt, J., Ramanathan, L., Prosise, W., Hu, M.

(2010) ACS Med Chem Lett 1: 214-218

• PubMed: 24900197 
• DOI: 10.1021/ml100063w


• PubMed Abstract: 
  

The imidazo-[1,2-a]-pyrazine (1) is a dual inhibitor of Aurora kinases A and B with modest cell potency (IC50 = 250 nM) and low solubility (5 μM). Lead optimization guided by the binding mode led to the acyclic amino alcohol 12k (SCH 1473759), which is a picomolar inhibitor of Aurora kinases (TdF K d Aur A = 0.02 nM and Aur B = 0.03 nM) with improved cell potency (phos-HH3 inhibition IC50 = 25 nM) and intrinsic aqueous solubility (11.4 mM). It also demonstrated efficacy and target engagement in human tumor xenograft mouse models.

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Organizational Affiliation: 

Department of Chemical Research.,Oncology.,Structural Chemistry.,Pharmaceutical Sciences.,Departments of Chemical Research.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Serine/threonine-protein kinase 6	A	272	Homo sapiens	Mutation(s): 0  Gene Names: AURKA (AIK, AIRK1, ARK1, AURA, AYK1, BTAK, IAK1, STK15, STK6) EC: 2.7.11.1
Find proteins for O14965 (Homo sapiens) Go to Gene View: AURKA Go to UniProtKB:  O14965

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
PG4	A	TETRAETHYLENE GLYCOL C8 H18 O5 UWHCKJMYHZGTIT-UHFFFAOYSA-N
EML	A	2-{ethyl[(5-{[6-methyl-3-(1H-pyrazol-4-yl)imidazo[1,2-a]pyrazin-8-yl]amino}isothiazol-3-yl)methyl]amino}-2-methylpropan-1-ol SCH 1473759 C20 H26 N8 O S RHGZQGXELRMGES-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
EML	Kd: 0.02 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.4 Å
• R-Value Free: 0.245 
• R-Value Work: 0.221 
• Space Group: P 6₁ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 80.880	α = 90.00
b = 80.880	β = 90.00
c = 171.282	γ = 120.00

Software Package:

Software Name	Purpose
HKL-2000	data reduction
BUSTER	refinement
HKL-2000	data scaling
StructureStudio	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-05-10 
• Released Date: 2010-07-21 
• Deposition Author(s): Hruza, A., Prosis, W., Ramanathan, L.

Revision History 

• Version 1.0: 2010-07-21
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance
• Version 1.2: 2018-04-18
  Type: Data collection, Database references