Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.56 kDa 
• Atom Count: 1230 
• Modelled Residue Count: 159 
• Deposited Residue Count: 159 
• Unique protein chains: 1

7HSC

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

• PDB DOI: 10.2210/pdb7HSC/pdb
• BMRB: 4497
• BMRB: 4599

• Classification: MOLECULAR CHAPERONE
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-05-03 Released: 1999-05-10 
• Deposition Author(s): Morshauser, R.C., Hu, W., Wang, H., Pang, Y., Flynn, G.C., Zuiderweg, E.R.P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 1 
• Selection Criteria: AVERAGE OF LOWEST TOTAL ENERGY 

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

• PubMed: 10373374 
• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (HEAT SHOCK COGNATE 70 KD PROTEIN 1)	A	159	Rattus norvegicus	Mutation(s): 0  Gene Names: Hspa8, Hsc70, Hsc73 EC: 3.6.4.10
UniProt
Find proteins for P63018 (Rattus norvegicus) Explore P63018  Go to UniProtKB:  P63018

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 1 
• Selection Criteria: AVERAGE OF LOWEST TOTAL ENERGY 
• OLDERADO: 7HSC Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-05-03 
• Released Date: 1999-05-10 
Deposition Author(s): Morshauser, R.C., Hu, W., Wang, H., Pang, Y., Flynn, G.C., Zuiderweg, E.R.P.

Revision History  

• Version 1.0: 1999-05-10
  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: 2022-03-16
  Changes: Data collection, Database references, Derived calculations