Publications by authors named "A Gomez-Puyou"

Triosephosphate isomerase (TIM) is a ubiquitous enzyme, which appeared early in evolution. TIM is responsible for obtaining net ATP from glycolysis and producing an extra pyruvate molecule for each glucose molecule, under aerobic and anaerobic conditions. It is placed in a metabolic crossroad that allows a quick balance of the triose phosphate aldolase produced by glycolysis, and is also linked to lipid metabolism through the alternation of glycerol-3-phosphate and the pentose cycle.

View Article and Find Full Text PDF

Rare arginine codons AGA and AGG affect the heterologous expression of proteins in . The tRNAs necessary for protein synthesis are scarce in strain BL21(DE3) pLysS and plentiful in strain BL21(DE3) CodonPlus -RIL. We evaluated in both bacterial strains the effect of these rare codons on the expression of triosephosphate isomerases from 7 different species, whose sequences had different dispositions of rare arginine codons.

View Article and Find Full Text PDF
Article Synopsis
  • The dimeric structure of triosephosphate isomerases (TIMs) is crucial for their stability, with a significant interface area helping maintain this form.
  • TvTIMs (from Trichomonas vaginalis) utilize unique mechanisms, including a ball and socket interaction and loop swapping between subunits, to remain dimeric, displaying different unfolding energetics compared to other TIMs.
  • Monomeric TvTIM variants, particularly I45A, show surprisingly high catalytic activity and stability despite their monomeric nature, suggesting that they can form functionally competent dimer-like complexes when substrate binds.
View Article and Find Full Text PDF

Triosephosphate isomerase (TIM) is an essential Trypanosoma cruzi enzyme and one of the few validated drug targets for Chagas disease. The known inhibitors of this enzyme behave poorly or have low activity in the parasite. In this work, we used symmetrical diarylideneketones derived from structures with trypanosomicidal activity.

View Article and Find Full Text PDF

The current pharmacological Chagas disease treatments, using Nifurtimox or Benznidazole, show limited therapeutic results and are associated with potential side effects, like mutagenicity. Using random screening we have identified new chemotypes that were able to inhibit relevant targets of the Trypanosoma cruzi. We found 3H-[1,2]dithioles with the ability to inhibit Trypanosoma cruzi triosephosphate isomerase (TcTIM).

View Article and Find Full Text PDF