2XAE

Crystal structure of human kinesin Eg5 in complex with (R)-2-amino-3-((S)-2-methyl-1,1-diphenylbutylthio)propanoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure-Activity Relationship and Multidrug Resistance Study of New S-Trityl-L-Cysteine Derivatives as Inhibitors of Eg5.

Kaan, H.Y.K.Weiss, J.Menger, D.Ulaganathan, V.Tkocz, K.Laggner, C.Popowycz, F.Joseph, B.Kozielski, F.

(2011) J.Med.Chem. 54: 1576

  • DOI: 10.1021/jm100991m
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The mitotic spindle is a validated target for cancer chemotherapy. Drugs such as taxanes and vinca alkaloids specifically target microtubules and cause the mitotic spindle to collapse. However, toxicity and resistance are problems associated with the ...

    The mitotic spindle is a validated target for cancer chemotherapy. Drugs such as taxanes and vinca alkaloids specifically target microtubules and cause the mitotic spindle to collapse. However, toxicity and resistance are problems associated with these drugs. Thus, alternative approaches to inhibiting the mitotic spindle are being pursued. These include targeting Eg5, a human kinesin involved in the formation of the bipolar spindle. We previously identified S-trityl-L-cysteine (STLC) as a potent allosteric inhibitor of Eg5. Here, we report the synthesis of a new series of STLC-like compounds with in vitro inhibition in the low nanomolar range. We also performed a multidrug resistance study in cell lines overexpressing P-glycoprotein and showed that some of these inhibitors may have the potential to overcome susceptibility to this efflux pump. Finally, we performed molecular docking of the compounds and determined the structures of two Eg5-inhibitor complexes to explain the structure-activity relationship of these compounds.


    Organizational Affiliation

    The Beatson Institute for Cancer Research, Switchback Road, Bearsden, Glasgow G61 1BD, Scotland, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KINESIN-LIKE PROTEIN KIF11
A, B, C
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 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ADP
Query on ADP

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Download CCD File 
A, B, C
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
MG
Query on MG

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Download CCD File 
A, B, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
2XA
Query on 2XA

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Download CCD File 
A, B, C
(2R)-2-AMINO-3-[(4-CHLOROPHENYL)-DIPHENYL-METHYL]SULFANYL-PROPANOIC ACID
C22 H20 Cl N O2 S
BSTXYLCINUXYQF-FQEVSTJZSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
2XAIC50: 53.3 nM (100) BINDINGDB
2XAKi: 200 nM (100) BINDINGDB
2XAKi: <50 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.181 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 96.770α = 90.00
b = 96.770β = 90.00
c = 124.751γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
iMOSFLMdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-30
    Type: Initial release
  • Version 1.1: 2011-05-19
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance