1SUX

CRYSTALLOGRAPHIC ANALYSIS OF THE COMPLEX BETWEEN TRIOSEPHOSPHATE ISOMERASE FROM TRYPANOSOMA CRUZI AND 3-(2-benzothiazolylthio)-1-propanesulfonic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Inactivation of triosephosphate isomerase from Trypanosoma cruzi by an agent that perturbs its dimer interface.

Tellez-Valencia, A.Olivares-Illana, V.Hernandez-Santoyo, A.Perez-Montfort, R.Costas, M.Rodriguez-Romero, A.Lopez-Calahorra, F.Tuena De Gomez-Puyou, M.Gomez-Puyou, A.

(2004) J.Mol.Biol. 341: 1355-1365

  • DOI: 10.1016/j.jmb.2004.06.056
  • Also Cited By: 2OMA

  • PubMed Abstract: 
  • We characterized by crystallographic, calorimetric and biochemical methods the action of a low molecular weight compound, 3-(2-benzothiazolylthio)-1-propanesulfonic acid (compound 8) that binds to the dimer interface of triosephosphate isomerase from ...

    We characterized by crystallographic, calorimetric and biochemical methods the action of a low molecular weight compound, 3-(2-benzothiazolylthio)-1-propanesulfonic acid (compound 8) that binds to the dimer interface of triosephosphate isomerase from Trypanosoma cruzi (TcTIM) and thereby abolishes its function with a high level of selectivity. The kinetics of TcTIM inactivation by the agent and isothermal titration calorimetry experiments showed that the binding of two molecules of the compound per enzyme is needed for inactivation. The binding of the first molecule is endothermic, and that of the second exothermic. Crystals of TcTIM in complex with one molecule of the inactivating agent that diffracted to a resolution of 2A were obtained. The compound is at the dimer interface at less than 4A from residues of the two subunits. Compound 8 is more effective at low than at high protein concentrations, indicating that it perturbs the association between the two TcTIM monomers. Calorimetric and kinetic data of experiments in which TcTIM was added to a solution of the inactivating agent showed that at low concentrations of the compound, inactivation is limited by binding, whereas at high concentrations of the agent, the events that follow binding become rate-limiting. The portion of the interface of TcTIM that binds the benzothiazole derivative and its equivalent region in human TIM differs in amino acid composition and hydrophobic packing. Thus, we show that by focusing on protein-protein interfaces, it is possible to discover low molecular weight compounds that are selective for enzymes from parasites.


    Related Citations: 
    • Differences in the intersubunit contacts in triosephosphate isomerase from two closely related pathogenic trypanosomes
      Maldonado, E.,Soriano-Garcia, M.,Moreno, A.,Cabrera, N.,Garza-Ramos, G.,De Gomez-Puyou, M.,Gomez-Puyou, A.,Perez-Montfort, R.
      (1998) J.Mol.Biol. 283: 193
    • Crystal structure of triosephosphate isomerase from Trypanosoma cruzi in hexane
      Gao, X.G.,Maldonado, E.,Perez-Monfort, R.,Garza-Ramos, G.,De Gomez-Puyou, M.T.,Gomez-Puyou, A.,Rodriguez-Romero, A.
      (1999) Proc.Natl.Acad.Sci.USA 96: 10062


    Organizational Affiliation

    Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México, D.F., 04510 México.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Triosephosphate isomerase, glycosomal
A, B
251Trypanosoma cruziMutation(s): 0 
EC: 5.3.1.1
Find proteins for P52270 (Trypanosoma cruzi)
Go to UniProtKB:  P52270
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
BTS
Query on BTS

Download SDF File 
Download CCD File 
B
3-(2-BENZOTHIAZOLYLTHIO)-1-PROPANESULFONIC ACID
C10 H11 N O3 S3
XBNHRNFODJOFRU-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.870α = 90.00
b = 75.580β = 90.00
c = 146.450γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
bioteXdata reduction
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description