2LLV

Solution structure of the yeast Sti1 DP1 domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The architecture of functional modules in the Hsp90 co-chaperone Sti1/Hop.

Schmid, A.B.Lagleder, S.Grawert, M.A.Rohl, A.Hagn, F.Wandinger, S.K.Cox, M.B.Demmer, O.Richter, K.Groll, M.Kessler, H.Buchner, J.

(2012) EMBO J 31: 1506-1517

  • DOI: 10.1038/emboj.2011.472
  • Primary Citation of Related Structures:  
    3UPV, 3UQ3, 2LLW, 2LLV

  • PubMed Abstract: 
  • Sti1/Hop is a modular protein required for the transfer of client proteins from the Hsp70 to the Hsp90 chaperone system in eukaryotes. It binds Hsp70 and Hsp90 simultaneously via TPR (tetratricopeptide repeat) domains. Sti1/Hop contains three TPR domains (TPR1, TPR2A and TPR2B) and two domains of unknown structure (DP1 and DP2) ...

    Sti1/Hop is a modular protein required for the transfer of client proteins from the Hsp70 to the Hsp90 chaperone system in eukaryotes. It binds Hsp70 and Hsp90 simultaneously via TPR (tetratricopeptide repeat) domains. Sti1/Hop contains three TPR domains (TPR1, TPR2A and TPR2B) and two domains of unknown structure (DP1 and DP2). We show that TPR2A is the high affinity Hsp90-binding site and TPR1 and TPR2B bind Hsp70 with moderate affinity. The DP domains exhibit highly homologous α-helical folds as determined by NMR. These, and especially DP2, are important for client activation in vivo. The core module of Sti1 for Hsp90 inhibition is the TPR2A-TPR2B segment. In the crystal structure, the two TPR domains are connected via a rigid linker orienting their peptide-binding sites in opposite directions and allowing the simultaneous binding of TPR2A to the Hsp90 C-terminal domain and of TPR2B to Hsp70. Both domains also interact with the Hsp90 middle domain. The accessory TPR1-DP1 module may serve as an Hsp70-client delivery system for the TPR2A-TPR2B-DP2 segment, which is required for client activation in vivo.


    Organizational Affiliation

    Department Chemie, Center for Integrated Protein Science (CIPSM), Technische Universität München, Garching, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein STI1A71Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: OR26.17STI1YOR027W
Find proteins for P15705 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P15705 
Go to UniProtKB:  P15705
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2LLV Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-25
    Type: Initial release
  • Version 1.1: 2012-04-04
    Changes: Database references