4BBG

Crystal structure of human kinesin Eg5 in complex with 3-(((2-Aminoethyl)sulfanyl)(3-ethylphenyl) phenylmethyl)phenol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Optimized S-Trityl-L-Cysteine-Based Inhibitors of Kinesin Spindle Protein with Potent in Vivo Antitumor Activity in Lung Cancer Xenograft Models.

Good, J.A.D.Wang, F.Rath, O.Kaan, H.Y.K.Talapatra, S.K.Podgorski, D.Mackay, S.P.Kozielski, F.

(2013) J.Med.Chem. 56: 1878

  • DOI: 10.1021/jm3014597

  • PubMed Abstract: 
  • The mitotic kinesin Eg5 is critical for the assembly of the mitotic spindle and is a promising chemotherapy target. Previously, we identified S-trityl-L-cysteine as a selective inhibitor of Eg5 and developed triphenylbutanamine analogues with improve ...

    The mitotic kinesin Eg5 is critical for the assembly of the mitotic spindle and is a promising chemotherapy target. Previously, we identified S-trityl-L-cysteine as a selective inhibitor of Eg5 and developed triphenylbutanamine analogues with improved potency, favorable drug-like properties, but moderate in vivo activity. We report here their further optimization to produce extremely potent inhibitors of Eg5 (K(i)(app) < 10 nM) with broad-spectrum activity against cancer cell lines comparable to the Phase II drug candidates ispinesib and SB-743921. They have good oral bioavailability and pharmacokinetics and induced complete tumor regression in nude mice explanted with lung cancer patient xenografts. Furthermore, they display fewer liabilities with CYP-metabolizing enzymes and hERG compared with ispinesib and SB-743921, which is important given the likely application of Eg5 inhibitors in combination therapies. We present the case for this preclinical series to be investigated in single and combination chemotherapies, especially targeting hematological malignancies.


    Organizational Affiliation

    Molecular Motors Laboratory, The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow G61 1BD, Scotland, UK. james.good@chem.umu.se




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KINESIN-LIKE PROTEIN KIF11
A
368Homo sapiensMutation(s): 0 
Gene Names: KIF11 (EG5, KNSL1, TRIP5)
Find proteins for P52732 (Homo sapiens)
Go to Gene View: KIF11
Go to UniProtKB:  P52732
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
CL
Query on CL

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Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
V02
Query on V02

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Download CCD File 
A
3-[(R)-2-azanylethylsulfanyl-(3-ethylphenyl)-phenyl-methyl]phenol
C23 H25 N O S
LKEJFEOGGYEWTI-HSZRJFAPSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
V02Ki: 4.8 nM (100) BINDINGDB
V02Ki: 4.8 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 158.190α = 90.00
b = 158.190β = 90.00
c = 158.190γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
PHASERphasing
iMOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-15
    Type: Initial release