5AP7

Naturally Occurring Mutations in the MPS1 Gene Predispose Cells to Kinase Inhibitor Drug Resistance.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Naturally Occurring Mutations in the Mps1 Gene Predispose Cells to Kinase Inhibitor Drug Resistance.

Gurden, M.D.Westwood, I.M.Faisal, A.Naud, S.Cheung, K.J.Mcandrew, C.Wood, A.Schmitt, J.Boxall, K.Mak, G.Workman, P.Burke, R.Hoelder, S.Blagg, J.Van Montfort, R.L.M.Linardopoulos, S.

(2015) Cancer Res. 75: 3340

  • DOI: 10.1158/0008-5472.CAN-14-3272
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Acquired resistance to therapy is perhaps the greatest challenge to effective clinical management of cancer. With several inhibitors of the mitotic checkpoint kinase MPS1 in preclinical development, we sought to investigate how resistance against the ...

    Acquired resistance to therapy is perhaps the greatest challenge to effective clinical management of cancer. With several inhibitors of the mitotic checkpoint kinase MPS1 in preclinical development, we sought to investigate how resistance against these inhibitors may arise so that mitigation or bypass strategies could be addressed as early as possible. Toward this end, we modeled acquired resistance to the MPS1 inhibitors AZ3146, NMS-P715, and CCT251455, identifying five point mutations in the kinase domain of MPS1 that confer resistance against multiple inhibitors. Structural studies showed how the MPS1 mutants conferred resistance by causing steric hindrance to inhibitor binding. Notably, we show that these mutations occur in nontreated cancer cell lines and primary tumor specimens, and that they also preexist in normal lymphoblast and breast tissues. In a parallel piece of work, we also show that the EGFR p.T790M mutation, the most common mutation conferring resistance to the EGFR inhibitor gefitinib, also preexists in cancer cells and normal tissue. Our results therefore suggest that mutations conferring resistance to targeted therapy occur naturally in normal and malignant cells and these mutations do not arise as a result of the increased mutagenic plasticity of cancer cells.


    Organizational Affiliation

    Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MONOPOLAR SPINDLE KINASE 1
A
313Homo sapiensMutation(s): 1 
Gene Names: TTK (MPS1, MPS1L1)
EC: 2.7.12.1
Find proteins for P33981 (Homo sapiens)
Go to Gene View: TTK
Go to UniProtKB:  P33981
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SVE
Query on SVE

Download SDF File 
Download CCD File 
A
N-(2,6-DIETHYLPHENYL)-1-METHYL-8-({4-[(1-METHYLPIPERIDIN-4-YL)CARBAMOYL]-2-(TRIFLUOROMETHOXY)PHENYL}AMINO)-4,5-DIHYDRO-1H-PYRAZOLO[4,3-H]QUINAZOLINE-3-CARBOXAMIDE
C35 H39 F3 N8 O3
JFOAJUGFHDCBJJ-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

Download SDF File 
Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SVEIC50: 7 - 182 nM (98) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.186 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.720α = 90.00
b = 111.970β = 90.00
c = 116.160γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-09-23
    Type: Initial release