5TTZ

Crystal structure of Grp94 bound to isoform-selective inhibitor methyl 2-(2-(1-(4-bromobenzyl)-1H-imidazol-2-yl)ethyl)-3-chloro-4,6-dihydroxybenzoate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.707 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Isoform-selective Hsp90 inhibition rescues model of hereditary open-angle glaucoma.

Stothert, A.R.Suntharalingam, A.Tang, X.Crowley, V.M.Mishra, S.J.Webster, J.M.Nordhues, B.A.Huard, D.J.E.Passaglia, C.L.Lieberman, R.L.Blagg, B.S.J.Blair, L.J.Koren, J.Dickey, C.A.

(2017) Sci Rep 7: 17951-17951

  • DOI: 10.1038/s41598-017-18344-4

  • PubMed Abstract: 
  • The heat shock protein 90 (Hsp90) family of molecular chaperones regulates protein homeostasis, folding, and degradation. The ER-resident Hsp90 isoform, glucose-regulated protein 94 (Grp94), promotes the aggregation of mutant forms of myocilin, a pro ...

    The heat shock protein 90 (Hsp90) family of molecular chaperones regulates protein homeostasis, folding, and degradation. The ER-resident Hsp90 isoform, glucose-regulated protein 94 (Grp94), promotes the aggregation of mutant forms of myocilin, a protein associated with primary open-angle glaucoma. While inhibition of Grp94 promotes the degradation of mutant myocilin in vitro, to date no Grp94-selective inhibitors have been investigated in vivo. Here, a Grp94-selective inhibitor facilitated mutant myocilin degradation and rescued phenotypes in a transgenic mouse model of hereditary primary open-angle glaucoma. Ocular toxicities previously associated with pan-Hsp90 inhibitors were not evident with our Grp94-selective inhibitor, 4-Br-BnIm. Our study suggests that selective inhibition of a distinct Hsp90 family member holds translational promise for ocular and other diseases associated with cell stress and protein misfolding.


    Organizational Affiliation

    Department of Molecular Medicine and Byrd Alzheimer's Research Institute, University of South Florida, Tampa, FL, 33613, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Endoplasmin
A, B
233Canis lupus familiarisMutation(s): 0 
Gene Names: HSP90B1 (GRP94, TRA1)
Find proteins for P41148 (Canis lupus familiaris)
Go to Gene View: HSP90B1
Go to UniProtKB:  P41148
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PE4
Query on PE4

Download SDF File 
Download CCD File 
B
2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
POLYETHYLENE GLYCOL PEG4000
C16 H34 O8
PJWQOENWHPEPKI-UHFFFAOYSA-N
 Ligand Interaction
7KY
Query on 7KY

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Download CCD File 
A, B
methyl 2-(2-{1-[(4-bromophenyl)methyl]-1H-imidazol-2-yl}ethyl)-3-chloro-4,6-dihydroxybenzoate
C20 H18 Br Cl N2 O4
FHDUIAYTJZAXNW-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

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Download CCD File 
B
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

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Download CCD File 
B
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

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Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.707 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.237α = 90.00
b = 84.420β = 90.00
c = 95.473γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
XSCALEdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Eye InstituteUnited StatesR01EY021205

Revision History 

  • Version 1.0: 2018-01-10
    Type: Initial release