3KD7

Designed TPR module (CTPR390) in complex with its peptide-ligand (Hsp90 peptide)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.271 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of a designed tetratricopeptide repeat module in complex with its peptide ligand.

Cortajarena, A.L.Wang, J.Regan, L.

(2010) Febs J. 277: 1058-1066

  • DOI: 10.1111/j.1742-4658.2009.07549.x

  • PubMed Abstract: 
  • Tetratricopeptide repeats (TPRs) are protein domains that mediate key protein-protein interactions in cells. Several TPR domains bind the C-termini of the chaperones heat shock protein (Hsp)90 and/or Hsp70, and exchange of such binding partners is ke ...

    Tetratricopeptide repeats (TPRs) are protein domains that mediate key protein-protein interactions in cells. Several TPR domains bind the C-termini of the chaperones heat shock protein (Hsp)90 and/or Hsp70, and exchange of such binding partners is key for the heat shock response. We have previously described the design of a TPR protein that binds tightly and specifically to the C-terminus of Hsp90, and in doing so, is able to inhibit chaperone function in vivo. Here we present the X-ray crystal structure of the designed TPR domain (CTPR390) in complex with its peptide ligand--the C-terminal residues of Hsp90 (peptide MEEVD). This structure reveals two interesting aspects of the TPR modules. First, a new packing arrangement of 3-TPR modules is observed. The TPR units stack against each other in an unusual fashion to form infinite superhelices in the crystal. Second, the structure provides insights into the molecular basis of TPR-ligand recognition.


    Organizational Affiliation

    Department of Molecular Biophysics & Biochemistry, Yale University, New Haven, CT, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CTPR390
A, B, C, D, E
125N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hsp90 MEEVD peptide
G, H, I, J, K
6Homo sapiensMutation(s): 0 
Find proteins for Q9H2A1 (Homo sapiens)
Go to UniProtKB:  Q9H2A1
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
G, H, I, J, K
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.271 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 100.674α = 90.00
b = 100.674β = 90.00
c = 161.574γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
MOLREPphasing
HKL-2000data scaling
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance