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- W102262257 abstract "The increasing prevalence of tuberculosis (TB), the emergence of multidrug-resistant strains of Mycobacterium tuberculosis, the causative agent of TB, and the devastating effect of coinfection with HIV have highlighted the urgent need for the development of new antimycobacterial agents. Analysis of the complete genome sequence of M. tuberculosis H37Rv shows the presence of genes involved in the aromatic amino acid biosynthetic pathway, the shikimate pathway, and experimental evidence showed that this pathway is essential for M. tuberculosis and it is absent in humans. The gene products that are essential for the growth of the microorganisms make them attractive drug targets since inhibiting their function may kill the bacilli. Our group has previously reported the cloning of M. tuberculosis aroE gene and the expression of the product in the soluble form, the shikimate dehydrogenase (MtbSD) enzyme, that catalysis the fourth reaction in the shikimate pathway. Currently, in the first manuscript “Functional shikimate dehydrogenase from Mycobacterium tuberculosis H37Rv: purification and characterization”, we present the purification of soluble and active MtbSD, N-terminal sequencing, mass spectrometry, assessment of the oligomeric state by gel filtration chromatography, thermal stability, determination of apparent steady-state kinetic parameters for both forward and reverse directions, apparent equilibrium constant, and energy of activation for the enzyme-catalyzed chemical reaction. In the second manuscript “Shikimate Dehydrogenase from Mycobacterium tuberculosis H37Rv: Kinetic and Chemical Mechanisms”, we describe the kinetic mechanism, initial velocity patterns in the forward direction, product inhibition studies, primary deuterium kinetic isotope effects, solvent kinetic isotope effects, multiple isotope effects, proton inventory, pH rate profile and the MtbSD 3D structure obtained in silicon by homology modeling. These results should be useful as a solid base for structural and kinetic studies, which can aid in the rational design of inhibitors to be tested as antimycobacterial agents." @default.
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- W102262257 date "2006-01-01" @default.
- W102262257 modified "2023-09-24" @default.
- W102262257 title "Chiquimato desidrogenase de Mycobacterium tuberculosis : mecanismos cinético e químico de enzima recombinante" @default.
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