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.




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