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Helicobacter pylori Xanthine–Guanine–Hypoxanthine PhosphoribosyltransferaseA Putative Target for Drug Discovery against Gastrointestinal Tract Infections

Helicobacter pylori (Hp) is a human pathogen that lives in the gastric mucosa of approximately 50% of the world’s population causing gastritis, peptic ulcers, and gastric cancer. An increase in resistance to current drugs has sparked the search for new Hp drug targets and therapeutics. One target is...

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Published in:Journal of medicinal chemistry 2021-05, Vol.64 (9), p.5710-5729
Main Authors: Keough, Dianne T, Wun, Shun Jie, Baszczyňski, Ondřej, Eng, Wai Soon, Špaček, Petr, Panjikar, Santosh, Naesens, Lieve, Pohl, Radek, Rejman, Dominik, Hocková, Dana, Ferrero, Richard L, Guddat, Luke W
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cited_by cdi_FETCH-LOGICAL-a394t-9a29bda7f03f8de7e4244201626f7865dcaf8fd258f01c562cebc13861ee26073
cites cdi_FETCH-LOGICAL-a394t-9a29bda7f03f8de7e4244201626f7865dcaf8fd258f01c562cebc13861ee26073
container_end_page 5729
container_issue 9
container_start_page 5710
container_title Journal of medicinal chemistry
container_volume 64
creator Keough, Dianne T
Wun, Shun Jie
Baszczyňski, Ondřej
Eng, Wai Soon
Špaček, Petr
Panjikar, Santosh
Naesens, Lieve
Pohl, Radek
Rejman, Dominik
Hocková, Dana
Ferrero, Richard L
Guddat, Luke W
description Helicobacter pylori (Hp) is a human pathogen that lives in the gastric mucosa of approximately 50% of the world’s population causing gastritis, peptic ulcers, and gastric cancer. An increase in resistance to current drugs has sparked the search for new Hp drug targets and therapeutics. One target is the disruption of nucleic acid production, which can be achieved by impeding the synthesis of 6-oxopurine nucleoside monophosphates, the precursors of DNA and RNA. These metabolites are synthesized by Hp xanthine–guanine–hypoxanthine phosphoribosyltransferase (XGHPRT). Here, nucleoside phosphonates have been evaluated, which inhibit the activity of this enzyme with K i values as low as 200 nM. The prodrugs of these compounds arrest the growth of Hp at a concentration of 50 μM in cell-based assays. The kinetic properties of HpXGHPRT have been determined together with its X-ray crystal structure in the absence and presence of 9-[(N-3-phosphonopropyl)-aminomethyl-9-deazahypoxanthine, providing a basis for new antibiotic development.
doi_str_mv 10.1021/acs.jmedchem.0c02184
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title Helicobacter pylori Xanthine–Guanine–Hypoxanthine PhosphoribosyltransferaseA Putative Target for Drug Discovery against Gastrointestinal Tract Infections
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