title: Inhibition of bacterial peptide deformylase by biaryl acid analogs.
abstract: Peptide deformylase is an essential eubacterial metalloenzyme involved in the maturation of proteins by cleaving the N-formyl group from N-blocked methionine polypeptides. Biaryl acid analogs containing tetrazole, acyl sulfonamide, or carboxylate pharmacophores were found to be potent inhibitors of recombinant Escherichia coli peptide deformylase. Two of these compounds, a biphenyl tetrazole, compound 1, and a biphenyl acyl sulfonamide, compound 4, were competitive inhibitors with K(i) values of 1.2 and 6.0 microM, respectively. By analogy to the binding of related compounds to other metalloenzymes such as Bacteroides fragilis metallo-beta-lactamase CcrA and human carbonic anhydrase, a mechanism of inhibition is proposed for these peptide deformylase inhibitors where the acidic moieties form direct ionic interactions with the active site metal cation.
authors.affiliation: Department of Biochemistry, Rahway, New Jersey, 07065, USA.
authors.forename: B G
authors.initials: BG
authors.lastname: Green
authors.forename: J H
authors.initials: JH
authors.lastname: Toney
authors.forename: J W
authors.initials: JW
authors.lastname: Kozarich
authors.forename: S K
authors.initials: SK
authors.lastname: Grant
mesh_terms: D000581:Amidohydrolases; D000626:Aminopeptidases / Q000037:antagonists & inhibitors* / Q000378:metabolism; D001667:Binding, Competitive; D001713:Biphenyl Compounds / Q000737:chemistry* / Q000494:pharmacology*; D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D004926:Escherichia coli / Q000201:enzymology*; D020128:Inhibitory Concentration 50; D008956:Models, Chemical; D011994:Recombinant Proteins / Q000037:antagonists & inhibitors / Q000378:metabolism; D013329:Structure-Activity Relationship; D013449:Sulfonamides / Q000737:chemistry* / Q000494:pharmacology*; D013777:Tetrazoles / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D001713:Biphenyl Compounds; D004791:Enzyme Inhibitors; D011994:Recombinant Proteins; D013449:Sulfonamides; D013777:Tetrazoles; D000626:Aminopeptidases; D000581:Amidohydrolases; C084507:peptide deformylase