Structural Basis for Client Recognition and Activity of Hsp40 Chaperones

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

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Structural basis for client recognition and activity of Hsp40 chaperones.

Jiang, Y.Rossi, P.Kalodimos, C.G.

(2019) Science 365: 1313-1319

  • DOI: https://doi.org/10.1126/science.aax1280
  • Primary Citation of Related Structures:  
    6PPT, 6PQ2, 6PQE, 6PQM, 6PRI, 6PRJ, 6PRP, 6PRQ, 6PSI

  • PubMed Abstract: 

    Hsp70 and Hsp40 chaperones work synergistically in a wide range of biological processes including protein synthesis, membrane translocation, and folding. We used nuclear magnetic resonance spectroscopy to determine the solution structure and dynamic features of an Hsp40 in complex with an unfolded client protein. Atomic structures of the various binding sites in the client complexed to the binding domains of the Hsp40 reveal the recognition pattern. Hsp40 engages the client in a highly dynamic fashion using a multivalent binding mechanism that alters the folding properties of the client. Different Hsp40 family members have different numbers of client-binding sites with distinct sequence selectivity, providing additional mechanisms for activity regulation and function modification. Hsp70 binding to Hsp40 displaces the unfolded client. The activity of Hsp40 is altered in its complex with Hsp70, further regulating client binding and release.

  • Organizational Affiliation

    Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Alkaline phosphatase,Chaperone protein DnaJ 2 fusion94Escherichia coli K-12Thermus thermophilus HB8
This entity is chimeric
Mutation(s): 0 
Gene Names: phoAb0383JW0374dnaJ2TTHA1489
Find proteins for Q56237 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q56237 
Go to UniProtKB:  Q56237
Find proteins for P00634 (Escherichia coli (strain K12))
Explore P00634 
Go to UniProtKB:  P00634
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP00634Q56237
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States5R35GM122462-04

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-18
    Type: Initial release
  • Version 1.1: 2019-10-23
    Changes: Data collection, Database references
  • Version 1.2: 2020-01-01
    Changes: Author supporting evidence
  • Version 1.3: 2024-05-01
    Changes: Data collection, Database references