Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 40521.78 
• Atom Count: 2679 
• Residue Count: 348 
• Unique protein chains: 1

3ZCW

Eg5 - New allosteric binding site

• DOI: 10.2210/pdb3ZCW/pdb

• Classification: CELL CYCLE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21


• Deposited: 2012-11-23 Released: 2013-01-23 
• Deposition Author(s): Ulaganathan, V., Talapatra, S.K., Kozielski, F., Pannifer, A.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.691 Å
• R-Value Free: 0.233 
• R-Value Work: 0.194 

Literature

Structural Insights Into a Unique Inhibitor Binding Pocket in Kinesin Spindle Protein.

Ulaganathan, V., Talapatra, S.K., Rath, O., Pannifer, A.D., Hackney, D.D., Kozielski, F.

(2013) J.Am.Chem.Soc. 135: 2263

• PubMed: 23305346 
• DOI: 10.1021/ja310377d


• PubMed Abstract: 
  

Human kinesin Eg5 is a target for drug development in cancer chemotherapy with compounds in phase II clinical trials. These agents bind to a well-characterized allosteric pocket involving the loop L5 region, a structural element in kinesin-5 family members thought to provide inhibitor specificity. Using X-ray crystallography, kinetic, and biophysical methods, we have identified and characterized a distinct allosteric pocket in Eg5 able to bind inhibitors with nanomolar K(d). This pocket is formed by key structural elements thought to be pivotal for force generation in kinesins and may represent a novel site for therapeutic intervention in this increasingly well-validated drug target.

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Organizational Affiliation: 

The Molecular Motors Laboratory, The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow G61 1BD, Scotland, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
KINESIN-LIKE PROTEIN KIF11	A	348	Homo sapiens	Mutation(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
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
EPE	A	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID HEPES C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
ADP	A	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N
4A2	A	(2E)-2-(3-fluoranyl-4-methoxy-phenyl)imino-1-[[2-(trifluoromethyl)phenyl]methyl]-3H-benzimidazole-5-carboxylic acid C23 H17 F4 N3 O3 KSDBWRGNYBMBEZ-UHFFFAOYSA-N
MG	A	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
PEG	A	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
4A2	Kd: 470 nM BINDINGMOAD
4A2	Kd: 650 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.691 Å
• R-Value Free: 0.233 
• R-Value Work: 0.194 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 107.940	α = 90.00
b = 62.890	β = 117.46
c = 75.050	γ = 90.00

Software Package:

Software Name	Purpose
XDS	data reduction
SCALA	data scaling
PHENIX	refinement
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-11-23 
• Released Date: 2013-01-23 
• Deposition Author(s): Ulaganathan, V., Talapatra, S.K., Kozielski, F., Pannifer, A.D.

Revision History 

• Version 1.0: 2013-01-23
  Type: Initial release
• Version 1.1: 2013-01-30
  Type: Structure summary
• Version 1.2: 2013-02-27
  Type: Database references