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 

wwPDB Validation 3D Report Full Report


This is version 1.1 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 63: 695-700

  • DOI: 10.1107/S1744309107033957

  • 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 impr ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transthyretin
A, B, C, D
127Homo sapiensGene Names: TTR (PALB)
Find proteins for P02766 (Homo sapiens)
Go to Gene View: TTR
Go to UniProtKB:  P02766
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.231 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 58.360α = 90.00
b = 58.360β = 90.00
c = 229.160γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
REFMACrefinement
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance