4KBQ

Structure of the CHIP-TPR domain in complex with the Hsc70 Lid-Tail domains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Bipartite Interaction between Hsp70 and CHIP Regulates Ubiquitination of Chaperoned Client Proteins.

Zhang, H.Amick, J.Chakravarti, R.Santarriaga, S.Schlanger, S.McGlone, C.Dare, M.Nix, J.C.Scaglione, K.M.Stuehr, D.J.Misra, S.Page, R.C.

(2015) Structure 23: 472-482

  • DOI: 10.1016/j.str.2015.01.003

  • PubMed Abstract: 
  • The ubiquitin ligase CHIP plays an important role in cytosolic protein quality control by ubiquitinating proteins chaperoned by Hsp70/Hsc70 and Hsp90, thereby targeting such substrate proteins for degradation. We present a 2.91 Å resolution structure ...

    The ubiquitin ligase CHIP plays an important role in cytosolic protein quality control by ubiquitinating proteins chaperoned by Hsp70/Hsc70 and Hsp90, thereby targeting such substrate proteins for degradation. We present a 2.91 Å resolution structure of the tetratricopeptide repeat (TPR) domain of CHIP in complex with the α-helical lid subdomain and unstructured tail of Hsc70. Surprisingly, the CHIP-TPR interacts with determinants within both the Hsc70-lid subdomain and the C-terminal PTIEEVD motif of the tail, exhibiting an atypical mode of interaction between chaperones and TPR domains. We demonstrate that the interaction between CHIP and the Hsc70-lid subdomain is required for proper ubiquitination of Hsp70/Hsc70 or Hsp70/Hsc70-bound substrate proteins. Posttranslational modifications of the Hsc70 lid and tail disrupt key contacts with the CHIP-TPR and may regulate CHIP-mediated ubiquitination. Our study shows how CHIP docks onto Hsp70/Hsc70 and defines a bipartite mode of interaction between TPR domains and their binding partners.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA.,Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA.,Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA. Electronic address: pagerc@miamioh.edu.,Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA. Electronic address: misras@ccf.org.,Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Molecular Biology Consortium, Beamline 4.2.2, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase CHIP
A, B
139Homo sapiensMutation(s): 0 
Gene Names: STUB1 (CHIP)
EC: 2.3.2.27
Find proteins for Q9UNE7 (Homo sapiens)
Go to Gene View: STUB1
Go to UniProtKB:  Q9UNE7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Heat shock cognate 71 kDa protein
D, C
101Homo sapiensMutation(s): 0 
Gene Names: HSPA8 (HSC70, HSP73, HSPA10)
Find proteins for P11142 (Homo sapiens)
Go to Gene View: HSPA8
Go to UniProtKB:  P11142
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.224 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 78.500α = 90.00
b = 78.500β = 90.00
c = 424.700γ = 120.00
Software Package:
Software NamePurpose
HKL-3000data reduction
PHENIXrefinement
PHENIXmodel building
SCALAdata scaling
ADSCdata collection
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-01-14
    Type: Initial release
  • Version 1.1: 2015-03-04
    Type: Database references
  • Version 1.2: 2015-03-18
    Type: Database references