5LJJ

Crystal structure of human Mps1 (TTK) in complex with Reversine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis of reversine selectivity in inhibiting Mps1 more potently than aurora B kinase.

Hiruma, Y.Koch, A.Dharadhar, S.Joosten, R.P.Perrakis, A.

(2016) Proteins 84: 1761-1766

  • DOI: 10.1002/prot.25174

  • PubMed Abstract: 
  • Monopolar spindle 1 (Mps1, also known as TTK) is a protein kinase crucial for ensuring that cell division progresses to anaphase only after all chromosomes are connected to spindle microtubules. Incomplete chromosomal attachment leads to abnormal chr ...

    Monopolar spindle 1 (Mps1, also known as TTK) is a protein kinase crucial for ensuring that cell division progresses to anaphase only after all chromosomes are connected to spindle microtubules. Incomplete chromosomal attachment leads to abnormal chromosome counts in the daughter cells (aneuploidy), a condition common in many solid cancers. Therefore Mps1 is an established target in cancer therapy. Mps1 kinase inhibitors include reversine (2-(4-morpholinoanilino)-6-cyclohexylaminopurine), a promiscuous compound first recognized as an inhibitor of the Aurora B mitotic kinase. Here, we present the 3.0-Å resolution crystal structure of the Mps1 kinase domain bound to reversine. Structural comparison of reversine bound to Mps1 and Aurora B, indicates a similar binding pose for the purine moiety of reversine making three conserved hydrogen bonds to the protein main chain, explaining the observed promiscuity of this inhibitor. The cyclohexyl and morpholinoaniline moieties of reversine however, have more extensive contacts with the protein in Mps1 than in Aurora B. This is reflected both in structure-based docking energy calculations, and in new experimental data we present here, that both confirm that the affinity of reversine towards Mps1 is about two orders of magnitude higher than towards Aurora B. Thus, our data provides detailed structural understanding of the existing literature that argues reversine inhibits Mps1 more efficiently than Aurora B based on biochemical and in-cell assays. Proteins 2016; 84:1761-1766. © 2016 Wiley Periodicals, Inc.


    Organizational Affiliation

    Division of Biochemistry, Netherlands Cancer Institute, 1066CX, Amsterdam, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dual specificity protein kinase TTK
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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AD5
Query on AD5

Download SDF File 
Download CCD File 
A
N~6~-cyclohexyl-N~2~-(4-morpholin-4-ylphenyl)-9H-purine-2,6-diamine
C21 H27 N7 O
ZFLJHSQHILSNCM-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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.224 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.852α = 90.00
b = 109.570β = 90.00
c = 113.209γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
REFMACrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
NWONetherlands722.015.008
NWONetherlands723.013.003
KWFNetherlands2012-5427

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2016-10-19
    Type: Database references
  • Version 1.2: 2016-11-30
    Type: Database references
  • Version 1.3: 2017-08-16
    Type: Data collection