2V7A

Crystal structure of the T315I Abl mutant in complex with the inhibitor PHA-739358


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 

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This is version 1.4 of the entry. See complete history


Literature

Crystal Structure of the T315I Abl Mutant in Complex with the Aurora Kinases Inhibitor Pha-739358.

Modugno, M.Casale, E.Soncini, C.Rosettani, P.Colombo, R.Lupi, R.Rusconi, L.Fancelli, D.Carpinelli, P.Cameron, A.D.Isacchi, A.Moll, J.

(2007) Cancer Res 67: 7987

  • DOI: https://doi.org/10.1158/0008-5472.CAN-07-1825
  • Primary Citation of Related Structures:  
    2V7A

  • PubMed Abstract: 

    Mutations in the kinase domain of Bcr-Abl are the most common cause of resistance to therapy with imatinib in patients with chronic myelogenous leukemia (CML). Second-generation Bcr-Abl inhibitors are able to overcome most imatinib-resistant mutants, with the exception of the frequent T315I substitution, which is emerging as a major cause of resistance to these drugs in CML patients. Structural studies could be used to support the drug design process for the development of inhibitors able to target the T315I substitution, but until now no crystal structure of the T315I Abl mutant has been solved. We show here the first crystal structure of the kinase domain of Abl T315I in complex with PHA-739358, an Aurora kinase inhibitor currently in clinical development for solid and hematologic malignancies. This compound inhibits in vitro the kinase activity of wild-type Abl and of several mutants, including T315I. The cocrystal structure of T315I Abl kinase domain provides the structural basis for this activity: the inhibitor associates with an active conformation of the kinase domain in the ATP-binding pocket and lacks the steric hindrance imposed by the substitution of threonine by isoleucine.


  • Organizational Affiliation

    Nerviano Medical Sciences Srl-Oncology, Milan, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTO-ONCOGENE TYROSINE-PROTEIN KINASE ABL1
A, B
286Homo sapiensMutation(s): 1 
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P00519 (Homo sapiens)
Explore P00519 
Go to UniProtKB:  P00519
PHAROS:  P00519
GTEx:  ENSG00000097007 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00519
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
PTR
Query on PTR
A, B
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Binding Affinity Annotations 
IDSourceBinding Affinity
627 PDBBind:  2V7A Kd: 5 (nM) from 1 assay(s)
Binding MOAD:  2V7A Kd: 5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 
  • Space Group: P 62
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 159.757α = 90
b = 159.757β = 90
c = 56.931γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-18
    Type: Initial release
  • Version 1.1: 2015-07-29
    Changes: Non-polymer description, Other, Version format compliance
  • Version 1.2: 2019-04-03
    Changes: Data collection, Derived calculations, Other, Source and taxonomy
  • Version 1.3: 2019-10-16
    Changes: Data collection, Other
  • Version 1.4: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Refinement description