2FO7

Crystal structure of an 8 repeat consensus TPR superhelix (trigonal crystal form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.266 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure and stability of designed TPR protein superhelices: unusual crystal packing and implications for natural TPR proteins.

Kajander, T.Cortajarena, A.L.Mochrie, S.Regan, L.

(2007) Acta Crystallogr.,Sect.D 63: 800-811

  • DOI: 10.1107/S0907444907024353
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure and stability of repeat proteins has been little studied in comparison to the properties of the more familiar globular proteins. Here, the structure and stability of designed tetratricopeptide-repeat (TPR) proteins is described. The TPR ...

    The structure and stability of repeat proteins has been little studied in comparison to the properties of the more familiar globular proteins. Here, the structure and stability of designed tetratricopeptide-repeat (TPR) proteins is described. The TPR is a 34-amino-acid motif which adopts a helix-turn-helix structure and occurs as tandem repeats. The design of a consensus TPR motif (CTPR) has previously been described. Here, the crystal structures and stabilities of proteins that contain eight or 20 identical tandem repeats of the CTPR motif (CTPR8 and CTPR20) are presented. Both CTPR8 and CTPR20 adopt a superhelical overall structure. The structures of the different-length CTPR proteins are compared with each other and with the structures of natural TPR domains. Also, the unusual and perhaps unique crystal-packing interactions resulting in pseudo-infinite crystalline superhelices observed in the different crystal forms of CTPR8 and CTPR20 are discussed. Finally, it is shown that the thermodynamic behavior of CTPR8 and CTPR20 can be predicted from the behavior of other TPRs in this series using an Ising model-based analysis. The designed protein series CTPR2-CTPR20 covers the natural size repertoire of TPR domains and as such is an excellent model system for natural TPR proteins.


    Related Citations: 
    • A New Folding Paradigm for Repeat Proteins
      Kajander, T.,Lopez-Cortajarena, A.,Main, E.,Mochrie, S.,Regan, L.
      (2005) J.Am.Chem.Soc. 127: 10188


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SYNTHETIC CONSENSUS TPR PROTEIN
A
136N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CD
Query on CD

Download SDF File 
Download CCD File 
A
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.266 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 68.550α = 90.00
b = 68.550β = 90.00
c = 67.230γ = 120.00
Software Package:
Software NamePurpose
SOLVEphasing
SCALEPACKdata scaling
HKL-2000data reduction
RESOLVEphasing
PDB_EXTRACTdata extraction
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-07
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description