2KHO

NMR-RDC / XRAY structure of E. coli HSP70 (DNAK) chaperone (1-605) complexed with ADP and substrate


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report

Currently 2KHO does not have a validation slider image.


This is version 1.3 of the entry. See complete history


Literature

Solution conformation of wild-type E. coli Hsp70 (DnaK) chaperone complexed with ADP and substrate.

Bertelsen, E.B.Chang, L.Gestwicki, J.E.Zuiderweg, E.R.

(2009) Proc Natl Acad Sci U S A 106: 8471-8476

  • DOI: https://doi.org/10.1073/pnas.0903503106
  • Primary Citation of Related Structures:  
    2KHO

  • PubMed Abstract: 

    DnaK is the canonical Hsp70 molecular chaperone protein from Escherichia coli. Like other Hsp70s, DnaK comprises two main domains: a 44-kDa N-terminal nucleotide-binding domain (NBD) that contains ATPase activity, and a 25-kDa substrate-binding domain (SBD) that harbors the substrate-binding site. Here, we report an experimental structure for wild-type, full-length DnaK, complexed with the peptide NRLLLTG and with ADP. It was obtained in aqueous solution by using NMR residual dipolar coupling and spin labeling methods and is based on available crystal structures for the isolated NBD and SBD. By using dynamics methods, we determine that the NBD and SBD are loosely linked and can move in cones of +/-35 degrees with respect to each other. The linker region between the domains is a dynamic random coil. Nevertheless, an average structure can be defined. This structure places the SBD in close proximity of subdomain IA of the NBD and suggests that the SBD collides with the NBD at this area to establish allosteric communication.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Heat shock protein 70605Escherichia coli K-12Mutation(s): 0 
Gene Names: dnaKgroPgrpFsegb0014JW0013
UniProt
Find proteins for P0A6Y8 (Escherichia coli (strain K12))
Explore P0A6Y8 
Go to UniProtKB:  P0A6Y8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6Y8
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report

Currently 2KHO does not have a validation slider image.



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-05-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-05-16
    Changes: Database references
  • Version 1.3: 2021-08-18
    Changes: Data collection, Database references, Experimental preparation, Structure summary