Validation of a homology model of Mycobacterium tuberculosis DXS: rationalization of observed activities of thiamine derivatives as potent inhibitors of two orthologues of DXSMasini, T., Lacy, B., Monjas, L., Hawksley, D., de Voogd, A. R., Illarionov, B., Iqbal, A., Leeper, F. J., Fischer, M., Kontoyianni, M. & Hirsch, A. K. H., 28-Sep-2015, In : Organic & Biomolecular Chemistry. 13, p. 11263-11277 15 p.
Research output: Contribution to journal › Article › Academic › peer-review
The enzyme DXS catalyzes the first, rate-limiting step of the 2-C-methyl-d-erythritol-4-phosphate (MEP, ) pathway using thiamine diphosphate (ThDP) as cofactor; the DXS-catalyzed reaction constitutes also the first step in vitamin B1 and B6 metabolism in bacteria. DXS is the least studied among the enzymes of this pathway in terms of crystallographic information, with only one complete crystal structure deposited in the Protein Data Bank (Deinococcus radiodurans DXS, PDB: ). We synthesized a series of thiamine and ThDP derivatives and tested them for their biochemical activity against two DXS orthologues, namely D. radiodurans DXS and Mycobacterium tuberculosis DXS. These experimental results, combined with advanced docking studies, led to the development and validation of a homology model of M. tuberculosis DXS, which, in turn, will guide medicinal chemists in rationally designing potential inhibitors for M. tuberculosis DXS.
|Number of pages||15|
|Journal||Organic & Biomolecular Chemistry|
|Publication status||Published - 28-Sep-2015|