1TRE

THE STRUCTURE OF TRIOSEPHOSPHATE ISOMERASE FROM ESCHERICHIA COLI DETERMINED AT 2.6 ANGSTROM RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.119 

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This is version 1.4 of the entry. See complete history

Literature

Structure of triosephosphate isomerase from Escherichia coli determined at 2.6 A resolution.

Noble, M.E.Zeelen, J.P.Wierenga, R.K.Mainfroid, V.Goraj, K.Gohimont, A.C.Martial, J.A.

(1993) Acta Crystallogr.,Sect.D 49: 403-417

  • DOI: 10.1107/S0907444993002628

  • PubMed Abstract: 
  • The structure of triosephosphate isomerase (TIM) from the organism Escherichia coli has been determined at a resolution of 2.6 A. The structure was solved by the molecular replacement method, first at 2.8 A resolution with a crystal grown by the tech ...

    The structure of triosephosphate isomerase (TIM) from the organism Escherichia coli has been determined at a resolution of 2.6 A. The structure was solved by the molecular replacement method, first at 2.8 A resolution with a crystal grown by the technique of hanging-drop crystallization from a mother liquor containing the transition-state analogue 2-phosphoglycolate (2PG). As a search model in the molecular replacement calculations, the refined structure of TIM from Trypanosoma brucei, which has a sequence identity of 46% compared to the enzyme from E. coli, was used. An E. coli TIM crystal grown in the absence of 2PG, diffracting to 2.6 A resolution, was later obtained by application of the technique of macro-seeding using a seed crystal grown from a mother liquor without 2PG. The final 2.6 A model has a crystallographic R factor of 11.9%, and agrees well with standard stereochemical parameters. The structure of E. coli TIM suggests the importance of residues which favour helix initiation for the formation of the TIM fold. In addition, TIM from E. coli shows peculiarities in its dimer interface, and in the packing of core residues within the beta-barrel.


    Organizational Affiliation

    European Molecular Biology Laboratory, Heidelburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRIOSEPHOSPHATE ISOMERASE
A, B
255Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: tpiA (tpi)
EC: 5.3.1.1
Find proteins for P0A858 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A858
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.119 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 67.690α = 90.00
b = 46.780β = 90.00
c = 151.310γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2019-07-17
    Type: Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Type: Data collection, Refinement description