Bisubstrate inhibitors of 6-hydroxymethyl-7,8-dihydroptein pyrophosphokinase: Toward cell permeability.

6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) is a key enzyme in the folate biosynthesis pathway. It catalyzes the pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin (HP). HPPK is essential for microorganisms but is absent in mammals. Yet, it is not the target of any existing antibiotics. Hence, this enzyme is an attractive target for developing novel antimicrobial agents. A wealth of structural and mechanistic information has provided solid basis for structure-based design of HPPK inhibitors. Our bisubstrate inhibitors were initially created by linking 6-hydroxymethylpterin to adenosine through 2, 3, or 4 phosphate groups (HP

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Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.