5NRO

Structure of full-length DnaK with bound J-domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular Mechanism of J-Domain-Triggered ATP Hydrolysis by Hsp70 Chaperones.

Kityk, R.Kopp, J.Mayer, M.P.

(2018) Mol. Cell 69: 227-237.e4

  • DOI: 10.1016/j.molcel.2017.12.003

  • PubMed Abstract: 
  • Efficient targeting of Hsp70 chaperones to substrate proteins depends on J-domain cochaperones, which in synergism with substrates trigger ATP hydrolysis in Hsp70s and concomitant substrate trapping. We present the crystal structure of the J-domain o ...

    Efficient targeting of Hsp70 chaperones to substrate proteins depends on J-domain cochaperones, which in synergism with substrates trigger ATP hydrolysis in Hsp70s and concomitant substrate trapping. We present the crystal structure of the J-domain of Escherichia coli DnaJ in complex with the E. coli Hsp70 DnaK. The J-domain interacts not only with DnaK's nucleotide-binding domain (NBD) but also with its substrate-binding domain (SBD) and packs against the highly conserved interdomain linker. Mutational replacement of contacts between J-domain and SBD strongly reduces the ability of substrates to stimulate ATP hydrolysis in the presence of DnaJ and compromises viability at heat shock temperatures. Our data demonstrate that the J-domain and the substrate do not deliver completely independent signals for ATP hydrolysis, but the J-domain, in addition to its direct influence on Hsp70s catalytic center, makes Hsp70 more responsive for the hydrolysis-inducing signal of the substrate, resulting in efficient substrate trapping.


    Organizational Affiliation

    Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chaperone protein DnaK
A
611Escherichia coli (strain K12)Mutation(s): 3 
Gene Names: dnaK (groP, grpF, seg)
Find proteins for P0A6Y8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6Y8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Chaperone protein DnaJ
B
108Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: dnaJ (groP)
Find proteins for P08622 (Escherichia coli (strain K12))
Go to UniProtKB:  P08622
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.216 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 127.246α = 90.00
b = 127.246β = 90.00
c = 252.885γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermanyMA 1278/4-3

Revision History 

  • Version 1.0: 2018-01-17
    Type: Initial release
  • Version 1.1: 2018-01-31
    Type: Database references