2QEL

Crystal structure of the highly amyloidogenic transthyretin mutant TTR G53S/E54D/L55S- heated protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Heating of proteins as a means of improving crystallization: a successful case study on a highly amyloidogenic triple mutant of human transthyretin

Karlsson, A.Sauer-Eriksson, A.E.

(2007) Acta Crystallogr Sect F Struct Biol Cryst Commun 63: 695-700

  • DOI: 10.1107/S1744309107033957
  • Primary Citation of Related Structures:  
    2QEL

  • PubMed Abstract: 
  • The use of high temperatures in the purification procedures of heat-stable proteins is a well established technique. Recently, rapid pre-heat treatment of protein samples prior to crystallization trials was described as a final polishing step to improve the diffraction properties of crystals [Pusey et al ...

    The use of high temperatures in the purification procedures of heat-stable proteins is a well established technique. Recently, rapid pre-heat treatment of protein samples prior to crystallization trials was described as a final polishing step to improve the diffraction properties of crystals [Pusey et al. (2005), Prog. Biophys. Mol. Biol. 88, 359-386]. The present study demonstrates that extended high-temperature incubation (328 K for 48 h) of the highly amyloidogenic transthyretin mutant TTR G53S/E54D/L55S successfully removes heterogeneities and allows the reproducible growth of well diffracting crystals. Heat treatment might be applied as an optimization method to other cases in which the protein/biomolecule fails to form diffracting crystals.


    Related Citations: 
    • The beta-slip: a new concept in transthyretin amyloidosis
      Eneqvist, T., Andersson, K., Olofsson, A., Lundgren, E., Sauer-Eriksson, A.E.
      (2000) Mol Cell 6: 1207
    • A comparative analysis of 23 structures of the amyloidogenic protein transthyretin
      Hornberg, A., Eneqvist, T., Olofsson, A., Lundgren, E., Sauer-Eriksson, A.E.
      (2000) J Mol Biol 302: 649

    Organizational Affiliation

    Umeå Centre for Molecular Pathogenesis, Umeå University, SE-901 87 Umeå, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TransthyretinA, B, C, D127Homo sapiensMutation(s): 3 
Gene Names: TTRPALB
UniProt & NIH Common Fund Data Resources
Find proteins for P02766 (Homo sapiens)
Explore P02766 
Go to UniProtKB:  P02766
PHAROS:  P02766
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.36α = 90
b = 58.36β = 90
c = 229.16γ = 120
Software Package:
Software NamePurpose
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-03-07
    Changes: Data collection