1X88

Human Eg5 motor domain bound to Mg-ADP and monastrol

• PDB DOI: https://doi.org/10.2210/pdb1X88/pdb

• Classification: CELL CYCLE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-08-17 Released: 2005-11-15 
• Deposition Author(s): Maliga, Z., Mitchison, T.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.225 
• R-Value Work: 0.203 
• R-Value Observed: 0.203 

Starting Model: experimental

Literature

Structural Basis of Eg5 Inhibition by Monastrol

Maliga, Z., Mitchison, T.J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 81.85 kDa 
• Atom Count: 6,030 
• Modelled Residue Count: 666 
• Deposited Residue Count: 718 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kinesin-like protein KIF11	A, B	359	Homo sapiens	Mutation(s): 0  Gene Names: KIF11, KNSL1, EG5
UniProt & NIH Common Fund Data Resources
Find proteins for P52732 (Homo sapiens) Explore P52732  Go to UniProtKB:  P52732
PHAROS:  P52732 GTEx:  ENSG00000138160

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADP	D [auth A], G [auth B]	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N
NAT	E [auth A], H [auth B]	ETHYL 4-(3-HYDROXYPHENYL)-6-METHYL-2-THIOXO-1,2,3,4-TETRAHYDROPYRIMIDINE-5-CARBOXYLATE C14 H16 N2 O3 S LOBCDGHHHHGHFA-LBPRGKRZSA-N
MG	C [auth A], F [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
NAT	BindingDB:  1X88	IC50: min: 1.00e+4, max: 2.07e+4 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.225 
• R-Value Work: 0.203 
• R-Value Observed: 0.203 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.706	α = 90
b = 79.648	β = 90
c = 159.451	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
Blu-Ice	data collection
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-11-15 
Deposition Author(s): Maliga, Z., Mitchison, T.J.

Revision History  

• Version 1.0: 2005-11-15
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-11
  Changes: Refinement description
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations
• Version 1.5: 2024-04-03
  Changes: Refinement description