Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 85.34 kDa 
• Atom Count: 5183 
• Residue Count: 685 
• Unique protein chains: 2

1DKG

CRYSTAL STRUCTURE OF THE NUCLEOTIDE EXCHANGE FACTOR GRPE BOUND TO THE ATPASE DOMAIN OF THE MOLECULAR CHAPERONE DNAK

• DOI: 10.2210/pdb1DKG/pdb

• Classification: COMPLEX (HSP24/HSP70)
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1997-02-13 Released: 1997-08-20 
• Deposition Author(s): Harrison, C.J., Kuriyan, J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.317 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 

Literature

Crystal structure of the nucleotide exchange factor GrpE bound to the ATPase domain of the molecular chaperone DnaK.

Harrison, C.J., Hayer-Hartl, M., Di Liberto, M., Hartl, F., Kuriyan, J.

(1997) Science 276: 431-435

• PubMed: 9103205 
• DOI: 10.1126/science.276.5311.431
• Primary Citation of Related Structures:  
  1DKG


• PubMed Abstract: 
  

The crystal structure of the adenine nucleotide exchange factor GrpE in complex with the adenosine triphosphatase (ATPase) domain of Escherichia coli DnaK [heat shock protein 70 (Hsp70)] was determined at 2.8 angstrom resolution. A dimer of GrpE binds asymmetrically to a single molecule of DnaK. The structure of the nucleotide-free ATPase domain in complex with GrpE resembles closely that of the nucleotide-bound mammalian Hsp70 homolog, except for an outward rotation of one of the subdomains of the protein. This conformational change is not consistent with tight nucleotide binding. Two long alpha helices extend away from the GrpE dimer and suggest a role for GrpE in peptide release from DnaK.

---

Organizational Affiliation: 

Laboratories of Molecular Biophysics and Howard Hughes Medical Institute, Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NUCLEOTIDE EXCHANGE FACTOR GRPE	A, B	197	Escherichia coli	Mutation(s): 1
Find proteins for P09372 (Escherichia coli (strain K12)) Explore P09372  Go to UniProtKB:  P09372

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
MOLECULAR CHAPERONE DNAK	D	383	Escherichia coli	Mutation(s): 1
Find proteins for P0A6Y8 (Escherichia coli (strain K12)) Explore P0A6Y8  Go to UniProtKB:  P0A6Y8

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.317 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 
• Space Group: P 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 149.43	α = 90
b = 149.43	β = 90
c = 49.03	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-02-13 
• Released Date: 1997-08-20 
Deposition Author(s): Harrison, C.J., Kuriyan, J.

Revision History 

• Version 1.0: 1997-08-20
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance