3TH6

Crystal structure of Triosephosphate isomerase from Rhipicephalus (Boophilus) microplus.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural and biochemical characterization of a recombinant triosephosphate isomerase from Rhipicephalus (Boophilus) microplus.

Moraes, J.Arreola, R.Cabrera, N.Saramago, L.Freitas, D.Masuda, A.da Silva Vaz, I.Tuena de Gomez-Puyou, M.Perez-Montfort, R.Gomez-Puyou, A.Logullo, C.

(2011) Insect Biochem.Mol.Biol. 41: 400-409

  • DOI: 10.1016/j.ibmb.2011.02.009

  • PubMed Abstract: 
  • Triosephosphate isomerase (TIM) is an enzyme with a role in glycolysis and gluconeogenesis by catalyzing the interconversion between glyceraldehyde 3-phosphate and dihydroxyacetone phosphate. This enzyme has been used as a target in endoparasite drug ...

    Triosephosphate isomerase (TIM) is an enzyme with a role in glycolysis and gluconeogenesis by catalyzing the interconversion between glyceraldehyde 3-phosphate and dihydroxyacetone phosphate. This enzyme has been used as a target in endoparasite drug development. In this work we cloned, expressed, purified and studied kinetic and structural characteristics of TIM from tick embryos, Rhipicephalus (Boophilus) microplus (BmTIM). The Km and Vmax of the recombinant BmTIM with glyceraldehyde 3-phosphate as substrate, were 0.47 mM and 6031 μmol min⁻¹ mg protein⁻¹, respectively. The resolution of the diffracted crystal was estimated to be 2.4 Å and the overall data showed that BmTIM is similar to other reported dimeric TIMs. However, we found that, in comparison to other TIMs, BmTIM has the highest content of cysteine residues (nine cysteine residues per monomer). Only two cysteines could make disulfide bonds in monomers of BmTIM. Furthermore, BmTIM was highly sensitive to the action of the thiol reagents dithionitrobenzoic acid and methyl methane thiosulfonate, suggesting that there are five cysteines exposed in each dimer and that these residues could be employed in the development of species-specific inhibitors.


    Organizational Affiliation

    Laboratório de Química e Função de Proteínas e Peptídeos and Unidade de Experimentação Animal-RJ, CBB, UENF, Avenida Alberto Lamego 2000, Horto, Campos dos Goytacazes, RJ, CEP 28015-620, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Triosephosphate isomerase
A, B
249Rhipicephalus microplusMutation(s): 0 
Gene Names: TIM
EC: 5.3.1.1
Find proteins for A8B3A8 (Rhipicephalus microplus)
Go to UniProtKB:  A8B3A8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.186 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 53.384α = 90.00
b = 53.384β = 90.00
c = 278.775γ = 120.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHASERphasing
CNSrefinement
MAR345dtbdata collection
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-31
    Type: Initial release