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: 2.60 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 

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:  
    2X2R, 2XAE

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KINESIN-LIKE PROTEIN KIF11ABC368Homo sapiensMutation(s): 0 
Gene Names: KIF11EG5KNSL1TRIP5
Find proteins for P52732 (Homo sapiens)
Explore P52732 
Go to UniProtKB:  P52732
NIH Common Fund Data Resources
PHAROS  P52732
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download CCD File 
A, B, C
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
2XA
Query on 2XA

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
SO4
Query on SO4

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

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

Download CCD File 
A, B, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
2XAKi :  50   nM  PDBBind
2XAKi:  200   nM  BindingDB
2XAIC50:  53.29999923706055   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.77α = 90
b = 96.77β = 90
c = 124.751γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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