title: Synthesis and antimicrobial activity of dermaseptin S1 analogues.
abstract: Dermaseptins are peptides found in the skin secretions of Phyllomedusinae frogs. These peptides exert lytic action on some microorganisms without substantial haemolysis. In an attempt to understand the antimicrobial activity of these peptides we designed several dermaseptin S1 (ALWKTMLKKLGTMALHAGKAALGAAADTISQGTQ) (DS1) analogues. All peptides were tested on the growth of prokaryotic (Gram-positive and Gram-negative bacteria) and eukaryotic (the yeast Candida albicans and the protozoon Leishmania major) organisms. Our data showed a dose-dependent killing effect by most DS1 derivatives. Maximal antibacterial activity was displayed by a 16-mer peptide that was more active than native DS1.
authors.affiliation: Department of Clinical and Biological Sciences, University of Torino, S. Luigi Gonzaga Hospital, Regione Gonzole 10, 10143 Orbassano, Torino, Italy.
authors.forename: Dianella
authors.initials: D
authors.lastname: Savoia
authors.forename: Remo
authors.initials: R
authors.lastname: Guerrini
authors.forename: Erika
authors.initials: E
authors.lastname: Marzola
authors.forename: Severo
authors.initials: S
authors.lastname: Salvadori
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D023181:Antimicrobial Cationic Peptides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002176:Candida albicans / Q000187:drug effects* / Q000254:growth & development; D004305:Dose-Response Relationship, Drug; D006090:Gram-Negative Bacteria / Q000187:drug effects* / Q000254:growth & development; D006094:Gram-Positive Bacteria / Q000187:drug effects* / Q000254:growth & development; D018320:Leishmania major / Q000187:drug effects* / Q000254:growth & development; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D011898:Ranidae; D013329:Structure-Activity Relationship
chemical_list: D023181:Antimicrobial Cationic Peptides