Paper Citing NAMD - Abstract
Friedman, Aaron J.; Durrant, Jacob D.; Pierce, Levi C. T.; McCorvie, Thomas J.; Timson, David J.; McCammon, J. Andrew
The Molecular Dynamics of Trypanosoma brucei UDP-Galactose 4 '-Epimerase: A Drug Target for African Sleeping Sickness
CHEMICAL BIOLOGY & DRUG DESIGN, 80:173-181, AUG 2012
During the past century, several epidemics of human African trypanosomiasis, a deadly disease caused by the protist Trypanosoma brucei, have afflicted sub-Saharan Africa. Over 10 000 new victims are reported each year, with hundreds of thousands more at risk. As current drug treatments are either highly toxic or ineffective, novel trypanocides are urgently needed. The T.similar to brucei galactose synthesis pathway is one potential therapeutic target. Although galactose is essential for T.similar to brucei survival, the parasite lacks the transporters required to intake galactose from the environment. UDP-galactose 4'-epimerase (TbGalE) is responsible for the epimerization of UDP-glucose to UDP-galactose and is therefore of great interest to medicinal chemists. Using molecular dynamics simulations, we investigate the atomistic motions of TbGalE in both the apo and holo states. The sampled conformations and protein dynamics depend not only on the presence of a UDP-sugar ligand, but also on the chirality of the UDP-sugar C4 atom. This dependence provides important insights into TbGalE function and may help guide future computer-aided drug discovery efforts targeting this protein.
