5AR0

HSP72 with adenosine-derived inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Exploiting Protein Conformational Change to Optimize Adenosine-Derived Inhibitors of Hsp70.

Cheeseman, M.D.Westwood, I.M.Barbeau, O.Rowlands, M.G.Dobson, S.Jones, A.M.Jeganathan, F.Burke, R.Kadi, N.Workman, P.Collins, I.Van Montfort, R.L.M.Jones, K.

(2016) J.Med.Chem. 59: 4625

  • DOI: 10.1021/acs.jmedchem.5b02001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • HSP70 is a molecular chaperone and a key component of the heat-shock response. Because of its proposed importance in oncology, this protein has become a popular target for drug discovery, efforts which have as yet brought little success. This study d ...

    HSP70 is a molecular chaperone and a key component of the heat-shock response. Because of its proposed importance in oncology, this protein has become a popular target for drug discovery, efforts which have as yet brought little success. This study demonstrates that adenosine-derived HSP70 inhibitors potentially bind to the protein with a novel mechanism of action, the stabilization by desolvation of an intramolecular salt-bridge which induces a conformational change in the protein, leading to high affinity ligands. We also demonstrate that through the application of this mechanism, adenosine-derived HSP70 inhibitors can be optimized in a rational manner.


    Organizational Affiliation

    Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research , London SW7 3RP, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK 70 KDA PROTEIN 1A
A
394Homo sapiensMutation(s): 0 
Gene Names: HSPA1A (HSP72, HSPA1, HSX70)
Find proteins for P0DMV8 (Homo sapiens)
Go to Gene View: HSPA1A
Go to UniProtKB:  P0DMV8
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

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

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
GB8
Query on GB8

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Download CCD File 
A
(2R,3R,4S,5R)-2-(6-amino-8-((quinolin-7-ylmethyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
C20 H21 N7 O4
ZPAVHMFARWZWPX-NVQRDWNXSA-N
 Ligand Interaction
DMS
Query on DMS

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Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
GB8IC50: 2900 nM (99) BINDINGDB
GB8Ki: 1290 nM (99) BINDINGDB
GB8Kd: 720 - 724 nM (88) BINDINGDB
GB8Kd: 720 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 47.880α = 90.00
b = 80.545β = 90.00
c = 92.979γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-05-11
    Type: Initial release
  • Version 1.1: 2016-06-08
    Type: Database references