2WOG

Intermediate and final states of human kinesin Eg5 in complex with S-trityl-L-cysteine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

An Allosteric Transition Trapped in an Intermediate State of a New Kinesin-Inhibitor Complex.

Kaan, H.Y.K.Ulaganathan, V.Hackney, D.D.Kozielski, F.

(2010) Biochem J 425: 55

  • DOI: 10.1042/BJ20091207
  • Primary Citation of Related Structures:  
    2WOG

  • PubMed Abstract: 
  • Human kinesin Eg5 plays an essential role in mitosis by separating duplicated centrosomes and establishing the bipolar spindle. Eg5 is an interesting drug target for the development of cancer chemotherapy, with seven inhibitors already in clinical trials ...

    Human kinesin Eg5 plays an essential role in mitosis by separating duplicated centrosomes and establishing the bipolar spindle. Eg5 is an interesting drug target for the development of cancer chemotherapy, with seven inhibitors already in clinical trials. In the present paper, we report the crystal structure of the Eg5 motor domain complexed with a potent antimitotic inhibitor STLC (S-trityl-L-cysteine) to 2.0 A (1 A=0.1 nm) resolution. The Eg5-STLC complex crystallizes in space group P3(2) with three molecules per asymmetric unit. Two of the molecules reveal the final inhibitor-bound state of Eg5, whereby loop L5 has swung downwards to close the inhibitor-binding pocket, helix alpha4 has rotated by approx. 15 degrees and the neck-linker has adopted a docked conformation. The third molecule, however, revealed an unprecedented intermediate state, whereby local changes at the inhibitor-binding pocket have not propagated to structural changes at the switch II cluster and neck-linker. This provides structural evidence for the sequence of drug-induced conformational changes.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KINESIN-LIKE PROTEIN KIF11A, B, C368Homo sapiensMutation(s): 0 
Gene Names: KIF11EG5KNSL1TRIP5
UniProt & NIH Common Fund Data Resources
Find proteins for P52732 (Homo sapiens)
Explore P52732 
Go to UniProtKB:  P52732
PHAROS:  P52732
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP52732
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
ZZD BindingDB:  2WOG Ki: min: 50, max: 143.8 (nM) from 6 assay(s)
IC50: min: 140, max: 1950 (nM) from 9 assay(s)
EC50: 1720 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.5α = 90
b = 96.5β = 90
c = 124.441γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-15
    Changes: Advisory, Data collection, Experimental preparation, Other