3AMA

Protein kinase A sixfold mutant model of Aurora B with inhibitor JNJ-7706621

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history. 


Literature

Mutants of protein kinase A that mimic the ATP-binding site of Aurora kinase

Pflug, A., de Oliveira, T.M., Bossemeyer, D., Engh, R.A.

(2011) Biochem J 440: 85-93

  • DOI: 10.1042/BJ20110592
  • Primary Citation of Related Structures:  
    3AMA, 3AMB

  • PubMed Abstract: 

    • We describe in the present paper mutations of the catalytic subunit α of PKA (protein kinase A) that introduce amino acid side chains into the ATP-binding site and progressively transform the pocket to mimic that of Aurora protein kinases. The resultant PKA variants are enzymatically active and exhibit high affinity for ATP site inhibitors that are specific for Aurora kinases ...

    We describe in the present paper mutations of the catalytic subunit α of PKA (protein kinase A) that introduce amino acid side chains into the ATP-binding site and progressively transform the pocket to mimic that of Aurora protein kinases. The resultant PKA variants are enzymatically active and exhibit high affinity for ATP site inhibitors that are specific for Aurora kinases. These features make the Aurora-chimaeric PKA a valuable tool for structure-based drug discovery tasks. Analysis of crystal structures of the chimaera reveal the roles for individual amino acid residues in the binding of a variety of inhibitors, offering key insights into selectivity mechanisms. Furthermore, the high affinity for Aurora kinase-specific inhibitors, combined with the favourable crystallizability properties of PKA, allow rapid determination of inhibitor complex structures at an atomic resolution. We demonstrate the utility of the Aurora-chimaeric PKA by measuring binding kinetics for three Aurora kinase-specific inhibitors, and present the X-ray structures of the chimaeric enzyme in complex with VX-680 (MK-0457) and JNJ-7706621 [Aurora kinase/CDK (cyclin-dependent kinase) inhibitor].

    Organizational Affiliation: 

    Norwegian Structural Biology Centre, Department of Chemistry, University of Tromsø, N-9037 Tromsø, Norway.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cAMP-dependent protein kinase catalytic subunit alphaA351Homo sapiensMutation(s): 6 
Gene Names: PRKACA, PKACA
EC: 2.7.11.11
UniProt & NIH Common Fund Data Resources
Find proteins for P17612 (Homo sapiens)
Explore P17612 
Go to UniProtKB:  P17612
PHAROS:  P17612
GTEx:  ENSG00000072062 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17612
Protein Feature View
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
cAMP-dependent protein kinase inhibitor alphaB20Homo sapiensMutation(s): 0 
Gene Names: PKIA, PRKACN1
UniProt & NIH Common Fund Data Resources
Find proteins for P61925 (Homo sapiens)
Explore P61925 
Go to UniProtKB:  P61925
PHAROS:  P61925
GTEx:  ENSG00000171033 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61925
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SKE
Query on SKE
Download Ideal Coordinates CCD File 
C [auth A]4-({5-amino-1-[(2,6-difluorophenyl)carbonyl]-1H-1,2,4-triazol-3-yl}amino)benzenesulfonamide
C15 H12 F2 N6 O3 S
KDKUVYLMPJIGKA-UHFFFAOYSA-N		 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP		A L-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO		A L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Binding Affinity Annotations 
IDSourceBinding Affinity
SKE PDBBind:  3AMA Ki: 297 (nM) from 1 assay(s)
Binding MOAD:  3AMA Ki: 297 (nM) from 1 assay(s)
BindingDB:  3AMA Kd: min: 1.00e+4, max: 1.00e+4 (nM) from 2 assay(s)
IC50: 1.00e+5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.42α = 90
b = 74.72β = 90
c = 80.44γ = 90
Software Package:
Software NamePurpose
MxCuBEdata collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-03
    Type: Initial release
  • Version 1.1: 2011-09-07
    Changes: Structure summary
  • Version 1.2: 2011-12-07
    Changes: Database references