1TBW

Ligand Induced Conformational Shift in the N-terminal Domain of GRP94, Open Conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Ligand-induced Conformational Shift in the N-terminal Domain of GRP94, an Hsp90 Chaperone.

Immormino, R.M.Dollins, D.E.Shaffer, P.L.Soldano, K.L.Walker, M.A.Gewirth, D.T.

(2004) J.Biol.Chem. 279: 46162-46171

  • DOI: 10.1074/jbc.M405253200
  • Primary Citation of Related Structures:  1TC0, 1TC6

  • PubMed Abstract: 
  • GRP94 is the endoplasmic reticulum paralog of cytoplasmic Hsp90. Models of Hsp90 action posit an ATP-dependent conformational switch in the N-terminal ligand regulatory domain of the chaperone. However, crystal structures of the isolated N-domain of ...

    GRP94 is the endoplasmic reticulum paralog of cytoplasmic Hsp90. Models of Hsp90 action posit an ATP-dependent conformational switch in the N-terminal ligand regulatory domain of the chaperone. However, crystal structures of the isolated N-domain of Hsp90 in complex with a variety of ligands have yet to demonstrate such a conformational change. We have determined the structure of the N-domain of GRP94 in complex with ATP, ADP, and AMP. Compared with the N-ethylcarboxamidoadenosine and radicicol-bound forms, these structures reveal a large conformational rearrangement in the protein. The nucleotide-bound form exposes new surfaces that interact to form a biochemically plausible dimer that is reminiscent of those seen in structures of MutL and DNA gyrase. Weak ATP binding and a conformational change in response to ligand identity are distinctive mechanistic features of GRP94 and suggest a model for how GRP94 functions in the absence of co-chaperones and ATP hydrolysis.


    Organizational Affiliation

    Department of Biochemistry, Duke University Medical Center, Durham, North Carolina 27710, USA.




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
PG4
Query on PG4

Download SDF File 
Download CCD File 
A, B
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
AMP
Query on AMP

Download SDF File 
Download CCD File 
A, B
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.220 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 160.202α = 90.00
b = 160.202β = 90.00
c = 109.564γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-08-09
    Type: Source and taxonomy