4A50

Crystal structure of human kinesin Eg5 in complex with 2-Amino-5-(3-methylphenyl)-5,5-diphenylpentanoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Triphenylbutanamines: Kinesin Spindle Protein Inhibitors with in Vivo Antitumor Activity.

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

(2012) J.Med.Chem. 55: 1511

  • DOI: 10.1021/jm201195m
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The human mitotic kinesin Eg5 represents a novel mitotic spindle target for cancer chemotherapy. We previously identified S-trityl-l-cysteine (STLC) and related analogues as selective potent inhibitors of Eg5. We herein report on the development of a ...

    The human mitotic kinesin Eg5 represents a novel mitotic spindle target for cancer chemotherapy. We previously identified S-trityl-l-cysteine (STLC) and related analogues as selective potent inhibitors of Eg5. We herein report on the development of a series of 4,4,4-triphenylbutan-1-amine inhibitors derived from the STLC scaffold. This new generation systematically improves on potency: the most potent C-trityl analogues exhibit K(i)(app) ≤ 10 nM and GI(50) ≈ 50 nM, comparable to results from the phase II clinical benchmark ispinesib. Crystallographic studies reveal that they adopt the same overall binding configuration as S-trityl analogues at an allosteric site formed by loop L5 of Eg5. Evaluation of their druglike properties reveals favorable profiles for future development and, in the clinical candidate ispinesib, moderate hERG and CYP inhibition. One triphenylbutanamine analogue and ispinesib possess very good bioavailability (51% and 45%, respectively), with the former showing in vivo antitumor growth activity in nude mice xenograft studies.


    Organizational Affiliation

    Molecular Motor Laboratory, The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow G61 1BD, Scotland, UK. wangfang@moon.ibp.ac.cn




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
DQ7
Query on DQ7

Download SDF File 
Download CCD File 
A
(2R)-2-AMINO-5-(3-METHYLPHENYL)-5,5-DIPHENYLPROPANOIC ACID
C24 H25 N O2
JXIGVUPYYZGRRZ-JOCHJYFZSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
DQ6
Query on DQ6

Download SDF File 
Download CCD File 
A
(2S)-2-AMINO-5-(3-METHYLPHENYL)-5,5-DIPHENYLPROPANOIC ACID
C24 H25 N O2
JXIGVUPYYZGRRZ-QFIPXVFZSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DQ7EC50: 73 nM (100) BINDINGDB
DQ6Ki: 11.1 - 12.8 nM (100) BINDINGDB
DQ7Ki: 5.1 - 12.2 nM (100) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.198 
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 158.540α = 90.00
b = 158.540β = 90.00
c = 158.540γ = 90.00
Software Package:
Software NamePurpose
iMOSFLMdata reduction
REFMACphasing
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-31
    Type: Initial release
  • Version 1.1: 2013-02-27
    Type: Database references, Other, Structure summary