Study of the Phosphoryl-Transfer Mechanism of Shikimate Kinase by NMR Spectroscopy

Chemistry : a European Journal
Verónica PradoConcepción González-Bello

Abstract

The phosphoryl-transfer mechanism of shikimate kinase from Mycobacterium tuberculosis and Helicobacter pylori, which is an attractive target for antibiotic drug discovery, has been studied by 1D (1)H and (31)P NMR spectroscopy. Metaphosphoric acid proved to be a good mimetic of the metaphosphate intermediate and facilitated the ready and rapid evaluation by NMR spectroscopic analysis of a dissociative mechanism. The required closed form of the active site for catalysis was achieved by the use of ADP (product) or two synthetic ADP analogues (AMPNP, AMPCP). Molecular dynamics simulation studies reported here also revealed that the essential arginine (Arg116/Arg117 in H. pylori and M. tuberculosis, respectively), which activates the γ-phosphate group of ATP for catalysis and triggers the release of the product for turnover, would also be involved in the stabilisation of the metaphosphate intermediate during catalysis. We believe that the studies reported here will be helpful for future structure-based design of inhibitors of this attractive target. The approach is also expected be useful for studies on the possible dissociative mechanism of other kinase enzymes.

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Citations

Apr 27, 2018·Biotechnology Journal·Bernhard SchoenenbergerRoland Wohlgemuth
Mar 15, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·José E S NunesRodrigo G Ducati
Oct 5, 2016·Chemistry : a European Journal·Verónica PradoConcepción González-Bello

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