5HPE

Phosphatase domain of PP5 bound to a phosphomimetic Cdc37 substrate peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and functional basis of protein phosphatase 5 substrate specificity.

Oberoi, J.Dunn, D.M.Woodford, M.R.Mariotti, L.Schulman, J.Bourboulia, D.Mollapour, M.Vaughan, C.K.

(2016) Proc.Natl.Acad.Sci.USA 113: 9009-9014

  • DOI: 10.1073/pnas.1603059113

  • PubMed Abstract: 
  • The serine/threonine phosphatase protein phosphatase 5 (PP5) regulates hormone- and stress-induced cellular signaling by association with the molecular chaperone heat shock protein 90 (Hsp90). PP5-mediated dephosphorylation of the cochaperone Cdc37 i ...

    The serine/threonine phosphatase protein phosphatase 5 (PP5) regulates hormone- and stress-induced cellular signaling by association with the molecular chaperone heat shock protein 90 (Hsp90). PP5-mediated dephosphorylation of the cochaperone Cdc37 is essential for activation of Hsp90-dependent kinases. However, the details of this mechanism remain unknown. We determined the crystal structure of a Cdc37 phosphomimetic peptide bound to the catalytic domain of PP5. The structure reveals PP5 utilization of conserved elements of phosphoprotein phosphatase (PPP) structure to bind substrate and provides a template for many PPP-substrate interactions. Our data show that, despite a highly conserved structure, elements of substrate specificity are determined within the phosphatase catalytic domain itself. Structure-based mutations in vivo reveal that PP5-mediated dephosphorylation is required for kinase and steroid hormone receptor release from the chaperone complex. Finally, our data show that hyper- or hypoactivity of PP5 mutants increases Hsp90 binding to its inhibitor, suggesting a mechanism to enhance the efficacy of Hsp90 inhibitors by regulation of PP5 activity in tumors.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Biological Sciences, University College London and Birkbeck College, London WC1E 7HX, United Kingdom;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein phosphatase 5,Hsp90 co-chaperone Cdc37
A
350Homo sapiensMutation(s): 1 
Gene Names: CDC37 (CDC37A), PPP5C (PPP5)
EC: 3.1.3.16
Find proteins for Q16543 (Homo sapiens)
Go to Gene View: CDC37
Go to UniProtKB:  Q16543
Find proteins for P53041 (Homo sapiens)
Go to Gene View: PPP5C
Go to UniProtKB:  P53041
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
NCO
Query on NCO

Download SDF File 
Download CCD File 
A
COBALT HEXAMMINE(III)
Co H18 N6
DYLMFCCYOUSRTK-FGTKAUEHAT
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.314α = 90.00
b = 65.164β = 90.00
c = 132.117γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
United Kingdom--

Revision History 

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2016-08-10
    Type: Database references
  • Version 1.2: 2016-08-24
    Type: Database references