title: Antimicrobial properties of N3-(iodoacetyl)-L-2,3-diaminopropanoic acid-peptide conjugates.
abstract: Six peptide conjugates consisting of either norvaline, methionine, or lysine and N3-(iodoacetyl)-L-2,3-diaminopropanoic acid--a strong, irreversible inactivator of bacterial and fungal glucosamine-6-phosphate synthase--were synthesized and their antibacterial and antifungal activities were evaluated. Antimicrobial potencies of these peptides were correlated with their transport and cleavage rates inside the cells. Bacteriolysis of Bacillus pumilus cells and inhibition of [14C]glucose incorporation into cell-wall polysaccharides of Candida albicans as a result of glucosamine 6-phosphate inactivation were also observed. Reversal of growth inhibitory effect of these peptides by N-acetylglucosamine in bacteria and fungi suggests the effective delivery of N3-iodoacetyl-L-2,3-diaminopropanoic acid into the cell by a peptide-transport system.
authors.affiliation: Department of Pharmaceutical Technology and Biochemistry, Technical University of Gdańsk, Poland.
authors.forename: R
authors.initials: R
authors.lastname: Andruszkiewicz
authors.forename: H
authors.initials: H
authors.lastname: Chmara
authors.forename: S
authors.initials: S
authors.lastname: Milewski
authors.forename: T
authors.initials: T
authors.lastname: Zieniawa
authors.forename: E
authors.initials: E
authors.lastname: Borowski
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D000935:Antifungal Agents / Q000138:chemical synthesis*; D001412:Bacillus subtilis / Q000187:drug effects; D001692:Biological Transport; D002176:Candida albicans / Q000187:drug effects; D002473:Cell Wall / Q000378:metabolism; D005944:Glucosamine / Q000031:analogs & derivatives* / Q000096:biosynthesis; D019298:Glucose-6-Phosphate / Q000031:analogs & derivatives*; D005958:Glucosephosphates / Q000096:biosynthesis*; D005945:Glutamine-Fructose-6-Phosphate Transaminase (Isomerizing) / Q000037:antagonists & inhibitors*; D010457:Peptidoglycan / Q000096:biosynthesis; D013329:Structure-Activity Relationship; D015091:beta-Alanine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D005958:Glucosephosphates; D010457:Peptidoglycan; D015091:beta-Alanine; C065926:N(3)-(iodoacetyl)-2,3-diaminopropanoic acid; C001293:glucosamine 6-phosphate; D019298:Glucose-6-Phosphate; D005945:Glutamine-Fructose-6-Phosphate Transaminase (Isomerizing); D005944:Glucosamine