1. Glutamyl-gamma-boronate inhibitors of bacterial Glu-tRNA(Gln) amidotransferase.
- Author
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Decicco CP, Nelson DJ, Luo Y, Shen L, Horiuchi KY, Amsler KM, Foster LA, Spitz SM, Merrill JJ, Sizemore CF, Rogers KC, Copeland RA, and Harpel MR
- Subjects
- Drug Evaluation, Preclinical, Inhibitory Concentration 50, Microbial Sensitivity Tests, Structure-Activity Relationship, Anti-Infective Agents chemistry, Anti-Infective Agents pharmacology, Boronic Acids chemistry, Boronic Acids pharmacology, Enzyme Inhibitors chemistry, Enzyme Inhibitors pharmacology, Nitrogenous Group Transferases antagonists & inhibitors
- Abstract
Analogues of glutamyl-gamma-boronate (1) were synthesized as mechanism-based inhibitors of bacterial Glu-tRNA(Gln) amidotransferase (Glu-AdT) and were designed to engage a putative catalytic serine nucleophile required for the glutaminase activity of the enzyme. Although 1 provides potent enzyme inhibition, structure-activity studies revealed a narrow range of tolerated chemical changes that maintained activity. Nonetheless, growth inhibition of organisms that require Glu-AdT by the most potent enzyme inhibitors appears to validate mechanism-based inhibitor design of Glu-AdT as an approach to antimicrobial development.
- Published
- 2001
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