3MSS

Abl kinase in complex with imatinib and fragment (FRAG2) in the myristate site

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.172 

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Ligand Structure Quality Assessment 


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Literature

Binding or bending: distinction of allosteric Abl kinase agonists from antagonists by an NMR-based conformational assay.

Jahnke, W., Grotzfeld, R.M., Pelle, X., Strauss, A., Fendrich, G., Cowan-Jacob, S.W., Cotesta, S., Fabbro, D., Furet, P., Mestan, J., Marzinzik, A.L.

(2010) J Am Chem Soc 132: 7043-7048

  • DOI: 10.1021/ja101837n
  • Primary Citation of Related Structures:  
    3MS9, 3MSS

  • PubMed Abstract: 

    • Allosteric inhibitors of Bcr-Abl have emerged as a novel therapeutic option for the treatment of CML. Using fragment-based screening, a search for novel Abl inhibitors that bind to the myristate pocket was carried out. Here we show that not all myristate ligands are functional inhibitors, but that the conformational state of C-terminal helix_I is a structural determinant for functional activity ...

    Allosteric inhibitors of Bcr-Abl have emerged as a novel therapeutic option for the treatment of CML. Using fragment-based screening, a search for novel Abl inhibitors that bind to the myristate pocket was carried out. Here we show that not all myristate ligands are functional inhibitors, but that the conformational state of C-terminal helix_I is a structural determinant for functional activity. We present an NMR-based conformational assay to monitor the conformation of this crucial helix_I and show that myristate ligands that bend helix_I are functional antagonists, whereas ligands that bind to the myristate pocket but do not induce this conformational change are kinase agonists. Activation of c-Abl by allosteric agonists has been confirmed in a biochemical assay.

    Organizational Affiliation: 

    Novartis Institutes for Biomedical Research, 4002 Basel, Switzerland. wolfgang.jahnke@novartis.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase ABL1A, B, C, D293Mus musculusMutation(s): 0 
Gene Names: Abl1, Abl
EC: 2.7.10.2
UniProt
Find proteins for P00520 (Mus musculus)
Explore P00520 
Go to UniProtKB:  P00520
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00520
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STI
Query on STI
Download Ideal Coordinates CCD File 
E [auth A],
G [auth B],
I [auth C],
K [auth D]		4-(4-METHYL-PIPERAZIN-1-YLMETHYL)-N-[4-METHYL-3-(4-PYRIDIN-3-YL-PYRIMIDIN-2-YLAMINO)-PHENYL]-BENZAMIDE
C29 H31 N7 O
KTUFNOKKBVMGRW-UHFFFAOYSA-N		 Ligand Interaction
MS7
Query on MS7
Download Ideal Coordinates CCD File 
F [auth A],
H [auth B],
J [auth C],
L [auth D]		O-benzyl-N-methyl-L-tyrosinamide
C17 H20 N2 O2
ZMTWQALRHGTUHL-INIZCTEOSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
STI BindingDB:  3MSS Ki: min: 13, max: 7000 (nM) from 5 assay(s)
Kd: min: 1, max: 1.00e+4 (nM) from 35 assay(s)
IC50: min: 1.1, max: 1.00e+4 (nM) from 60 assay(s)
EC50: min: 34, max: 1000 (nM) from 4 assay(s)
MS7 PDBBind:  3MSS Kd: 2.20e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.172 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.219α = 90
b = 146.78β = 127.07
c = 95.812γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance