4J8D

Middle domain of Hsc70-interacting protein, crystal form II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.246 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and function of Hip, an attenuator of the Hsp70 chaperone cycle.

Li, Z.Hartl, F.U.Bracher, A.

(2013) Nat.Struct.Mol.Biol. 20: 929-935

  • DOI: 10.1038/nsmb.2608
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Hsp70-interacting protein, Hip, cooperates with the chaperone Hsp70 in protein folding and prevention of aggregation. Hsp70 interacts with non-native protein substrates in an ATP-dependent reaction cycle regulated by J-domain proteins and nucleot ...

    The Hsp70-interacting protein, Hip, cooperates with the chaperone Hsp70 in protein folding and prevention of aggregation. Hsp70 interacts with non-native protein substrates in an ATP-dependent reaction cycle regulated by J-domain proteins and nucleotide exchange factors (NEFs). Hip is thought to delay substrate release by slowing ADP dissociation from Hsp70. Here we present crystal structures of the dimerization domain and the tetratricopeptide repeat (TPR) domain of rat Hip. As shown in a cocrystal structure, the TPR core of Hip interacts with the Hsp70 ATPase domain through an extensive interface, to form a bracket that locks ADP in the binding cleft. Hip and NEF binding to Hsp70 are mutually exclusive, and thus Hip attenuates active cycling of Hsp70-substrate complexes. This mechanism explains how Hip enhances aggregation prevention by Hsp70 and facilitates transfer of specific proteins to downstream chaperones or the proteasome.


    Organizational Affiliation

    Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hsc70-interacting protein
A, B, C, D
175Rattus norvegicusMutation(s): 0 
Gene Names: St13 (Fam10a1, Hip)
Find proteins for P50503 (Rattus norvegicus)
Go to UniProtKB:  P50503
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.246 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 57.290α = 90.00
b = 126.998β = 105.93
c = 57.312γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata scaling
XSCALEdata scaling
REFMACrefinement
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-02-14 
  • Released Date: 2013-07-03 
  • Deposition Author(s): Li, Z., Bracher, A.

Revision History 

  • Version 1.0: 2013-07-03
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references