2QWL

Crystal structure of bovine hsc70 (1-394aa)in the ADP state


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of J cochaperone binding and regulation of Hsp70.

Jiang, J.Maes, E.G.Taylor, A.B.Wang, L.Hinck, A.P.Lafer, E.M.Sousa, R.

(2007) Mol Cell 28: 422-433

  • DOI: 10.1016/j.molcel.2007.08.022
  • Primary Citation of Related Structures:  
    2QWO, 2QWN, 2QWM, 2QWL, 2QWR, 2QWQ, 2QWP, 2QW9

  • PubMed Abstract: 
  • The many protein processing reactions of the ATP-hydrolyzing Hsp70s are regulated by J cochaperones, which contain J domains that stimulate Hsp70 ATPase activity and accessory domains that present protein substrates to Hsp70s. We report the structure of a J domain complexed with a J responsive portion of a mammalian Hsp70 ...

    The many protein processing reactions of the ATP-hydrolyzing Hsp70s are regulated by J cochaperones, which contain J domains that stimulate Hsp70 ATPase activity and accessory domains that present protein substrates to Hsp70s. We report the structure of a J domain complexed with a J responsive portion of a mammalian Hsp70. The J domain activates ATPase activity by directing the linker that connects the Hsp70 nucleotide binding domain (NBD) and substrate binding domain (SBD) toward a hydrophobic patch on the NBD surface. Binding of the J domain to Hsp70 displaces the SBD from the NBD, which may allow the SBD flexibility to capture diverse substrates. Unlike prokaryotic Hsp70, the SBD and NBD of the mammalian chaperone interact in the ADP state. Thus, although both nucleotides and J cochaperones modulate Hsp70 NBD:linker and NBD:SBD interactions, the intrinsic persistence of those interactions differs in different Hsp70s and this may optimize their activities for different cellular roles.


    Organizational Affiliation

    Department of Biochemistry, University of Texas Health Science Center, San Antonio, TX 78229-3900, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock cognate 71 kDa proteinA, B394Bos taurusMutation(s): 0 
Gene Names: HSPA8HSC70
Find proteins for P19120 (Bos taurus)
Explore P19120 
Go to UniProtKB:  P19120
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ADPKd:  320   nM  BindingDB
ADPKd:  324   nM  BindingDB
ADPIC50:  280   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.306α = 90
b = 77.962β = 101.46
c = 75.32γ = 90
Software Package:
Software NamePurpose
d*TREKdata scaling
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
d*TREKdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description