1CKR

HIGH RESOLUTION SOLUTION STRUCTURE OF THE HEAT SHOCK COGNATE-70 KD SUBSTRATE BINDING DOMAIN OBTAINED BY MULTIDIMENSIONAL NMR TECHNIQUES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TOTAL ENERGY 

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This is version 1.3 of the entry. See complete history


Literature

High-resolution solution structure of the 18 kDa substrate-binding domain of the mammalian chaperone protein Hsc70.

Morshauser, R.C.Hu, W.Wang, H.Pang, Y.Flynn, G.C.Zuiderweg, E.R.

(1999) J Mol Biol 289: 1387-1403

  • DOI: 10.1006/jmbi.1999.2776
  • Primary Citation of Related Structures:  
    1CKR, 7HSC

  • PubMed Abstract: 
  • The three-dimensional structure for the substrate-binding domain of the mammalian chaperone protein Hsc70 of the 70 kDa heat shock class (HSP70) is presented. This domain includes residues 383-540 (18 kDa) and is necessary for the binding of the chaperone with substrate proteins and peptides ...

    The three-dimensional structure for the substrate-binding domain of the mammalian chaperone protein Hsc70 of the 70 kDa heat shock class (HSP70) is presented. This domain includes residues 383-540 (18 kDa) and is necessary for the binding of the chaperone with substrate proteins and peptides. The high-resolution NMR solution structure is based on 4150 experimental distance constraints leading to an average root-mean-square precision of 0.38 A for the backbone atoms and 0.76 A for all atoms in the beta-sandwich sub-domain. The protein is observed to bind residue Leu539 in its hydrophobic substrate-binding groove by intramolecular interaction. The position of a helical latch differs dramatically from what is observed in the crystal and solution structures of the homologous prokaryotic chaperone DnaK. In the Hsc70 structure, the helix lies in a hydrophobic groove and is anchored by a buried salt-bridge. Residues involved in this salt-bridge appear to be important for the allosteric functioning of the protein. A mechanism for interdomain allosteric modulation of substrate-binding is proposed. It involves large-scale movements of the helical domain, redefining the location of the hinge area that enables such motions.


    Organizational Affiliation

    Department of Biological Chemistry,University of Michigan, Ann Arbor, 48109, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEAT SHOCK SUBSTRATE BINDING DOMAIN OF HSC-70A159Rattus norvegicusMutation(s): 0 
Gene Names: Hspa8Hsc70Hsc73
EC: 3.6.4.10
UniProt
Find proteins for P63018 (Rattus norvegicus)
Explore P63018 
Go to UniProtKB:  P63018
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63018
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TOTAL ENERGY 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-04-30
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations