3O2F

Structure of the N-domain of GRP94 bound to the HSP90 inhibitor PU-H54


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Paralog-selective Hsp90 inhibitors define tumor-specific regulation of HER2.

Patel, P.D.Yan, P.Seidler, P.M.Patel, H.J.Sun, W.Yang, C.Que, N.S.Taldone, T.Finotti, P.Stephani, R.A.Gewirth, D.T.Chiosis, G.

(2013) Nat.Chem.Biol. 9: 677-684

  • DOI: 10.1038/nchembio.1335
  • Primary Citation of Related Structures:  3O0I

  • PubMed Abstract: 
  • Although the Hsp90 chaperone family, comprised in humans of four paralogs, Hsp90α, Hsp90β, Grp94 and Trap-1, has important roles in malignancy, the contribution of each paralog to the cancer phenotype is poorly understood. This is in large part becau ...

    Although the Hsp90 chaperone family, comprised in humans of four paralogs, Hsp90α, Hsp90β, Grp94 and Trap-1, has important roles in malignancy, the contribution of each paralog to the cancer phenotype is poorly understood. This is in large part because reagents to study paralog-specific functions in cancer cells have been unavailable. Here we combine compound library screening with structural and computational analyses to identify purine-based chemical tools that are specific for Hsp90 paralogs. We show that Grp94 selectivity is due to the insertion of these compounds into a new allosteric pocket. We use these tools to demonstrate that cancer cells use individual Hsp90 paralogs to regulate a client protein in a tumor-specific manner and in response to proteome alterations. Finally, we provide new mechanistic evidence explaining why selective Grp94 inhibition is particularly efficacious in certain breast cancers.


    Organizational Affiliation

    1] Molecular Pharmacology and Chemistry Program, Sloan-Kettering Institute, New York, New York, USA. [2] Department of Pharmaceutical Sciences, College of Pharmacy and Allied Health Professions, St. John's University, Jamaica, New York, USA. [3].




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Endoplasmin
A, B
236Canis lupus familiarisGene Names: HSP90B1 (GRP94, TRA1)
Find proteins for P41148 (Canis lupus familiaris)
Go to Gene View: HSP90B1
Go to UniProtKB:  P41148
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
P54
Query on P54

Download SDF File 
Download CCD File 
A, B
8-[(2,4-dimethylphenyl)sulfanyl]-3-pent-4-yn-1-yl-3H-purin-6-amine
C18 H19 N5 S
IIQUFGUOGYICIJ-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

Download SDF File 
Download CCD File 
A
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.234 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 60.960α = 90.00
b = 65.686β = 98.13
c = 85.453γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-05
    Type: Initial release
  • Version 1.1: 2013-09-11
    Type: Database references
  • Version 1.2: 2013-11-20
    Type: Database references
  • Version 1.3: 2017-08-23
    Type: Refinement description, Source and taxonomy