3H9F

Crystal Structure of Human Dual Specificity Protein Kinase (TTK) in complex with a pyrimido-diazepin ligand


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Small-molecule kinase inhibitors provide insight into Mps1 cell cycle function.

Kwiatkowski, N.Jelluma, N.Filippakopoulos, P.Soundararajan, M.Manak, M.S.Kwon, M.Choi, H.G.Sim, T.Deveraux, Q.L.Rottmann, S.Pellman, D.Shah, J.V.Kops, G.J.Knapp, S.Gray, N.S.

(2010) Nat.Chem.Biol. 6: 359-368

  • DOI: 10.1038/nchembio.345
  • Primary Citation of Related Structures:  3CEK, 3GFW

  • PubMed Abstract: 
  • Mps1, a dual-specificity kinase, is required for the proper functioning of the spindle assembly checkpoint and for the maintenance of chromosomal stability. As Mps1 function has been implicated in numerous phases of the cell cycle, the development of ...

    Mps1, a dual-specificity kinase, is required for the proper functioning of the spindle assembly checkpoint and for the maintenance of chromosomal stability. As Mps1 function has been implicated in numerous phases of the cell cycle, the development of a potent, selective small-molecule inhibitor of Mps1 should facilitate dissection of Mps1-related biology. We describe the cellular effects and Mps1 cocrystal structures of new, selective small-molecule inhibitors of Mps1. Consistent with RNAi studies, chemical inhibition of Mps1 leads to defects in Mad1 and Mad2 establishment at unattached kinetochores, decreased Aurora B kinase activity, premature mitotic exit and gross aneuploidy, without any evidence of centrosome duplication defects. However, in U2OS cells having extra centrosomes (an abnormality found in some cancers), Mps1 inhibition increases the frequency of multipolar mitoses. Lastly, Mps1 inhibitor treatment resulted in a decrease in cancer cell viability.


    Organizational Affiliation

    Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dual specificity protein kinase TTK
A
313Homo sapiensGene 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
92M
Query on 92M

Download SDF File 
Download CCD File 
A
9-cyclopentyl-2-(4-(4-hydroxypiperidin-1-yl)-2-methoxyphenylamino)-5-methyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one
9-cyclopentyl-2-{[4-(4-hydroxypiperidin-1-yl)-2-methoxyphenyl]amino}-5-methyl-5,7,8,9-tetrahydro-6H-pyrimido[4,5-b][1,4]diazepin-6-one
C25 H34 N6 O3
KBILTEUAXWLXKP-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
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
92MKd: 12 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.207 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.690α = 90.00
b = 110.750β = 90.00
c = 115.200γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PDB_EXTRACTdata extraction
SCALAdata scaling
MOSFLMdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2009-05-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance