6Z5N

DnaJB1 JD-GF


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 25000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

HSP40 proteins use class-specific regulation to drive HSP70 functional diversity.

Faust, O.Abayev-Avraham, M.Wentink, A.S.Maurer, M.Nillegoda, N.B.London, N.Bukau, B.Rosenzweig, R.

(2020) Nature 587: 489-494

  • DOI: https://doi.org/10.1038/s41586-020-2906-4
  • Primary Citation of Related Structures:  
    6Z5N

  • PubMed Abstract: 

    The ubiquitous heat shock protein 70 (HSP70) family consists of ATP-dependent molecular chaperones, which perform numerous cellular functions that affect almost all aspects of the protein life cycle from synthesis to degradation 1-3 . Achieving this broad spectrum of functions requires precise regulation of HSP70 activity. Proteins of the HSP40 family, also known as J-domain proteins (JDPs), have a key role in this process by preselecting substrates for transfer to their HSP70 partners and by stimulating the ATP hydrolysis of HSP70, leading to stable substrate binding 3,4 . In humans, JDPs constitute a large and diverse family with more than 40 different members 2 , which vary in their substrate selectivity and in the nature and number of their client-binding domains 5 . Here we show that JDPs can also differ fundamentally in their interactions with HSP70 chaperones. Using nuclear magnetic resonance spectroscopy 6,7 we find that the major class B JDPs are regulated by an autoinhibitory mechanism that is not present in other classes. Although in all JDPs the interaction of the characteristic J-domain is responsible for the activation of HSP70, in DNAJB1 the HSP70-binding sites in this domain are intrinsically blocked by an adjacent glycine-phenylalanine rich region-an inhibition that can be released upon the interaction of a second site on DNAJB1 with the HSP70 C-terminal tail. This regulation, which controls substrate targeting to HSP70, is essential for the disaggregation of amyloid fibres by HSP70-DNAJB1, illustrating why no other class of JDPs can substitute for class B in this function. Moreover, this regulatory layer, which governs the functional specificities of JDP co-chaperones and their interactions with HSP70s, could be key to the wide range of cellular functions of HSP70.


  • Organizational Affiliation

    Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DnaJ homolog subfamily B member 1110Homo sapiensMutation(s): 0 
Gene Names: DNAJB1DNAJ1HDJ1HSPF1
UniProt & NIH Common Fund Data Resources
Find proteins for P25685 (Homo sapiens)
Explore P25685 
Go to UniProtKB:  P25685
PHAROS:  P25685
GTEx:  ENSG00000132002 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25685
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 25000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union802001

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-18
    Type: Initial release
  • Version 1.1: 2020-11-25
    Changes: Database references
  • Version 1.2: 2020-12-02
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Database references, Other