A complete model of the Plasmodium falciparum bifunctional enzyme dihydrofolate reductase-thymidylate synthase: a model to design new antimalarials

we propose a theoretical model for pfdhfr-ts, which includes the 55 aminoacid residues ignored in the crystallographic model. the electrostatic potential calculation on the model surface revealed a continuous positive potential region between the two active sites, suggesting an optimized mechanism for dihydrofolate transport.