Structural insights into and activity analysis of the antimicrobial peptide myxinidin(1325 views) Cantisani M, Finamore E, Mignogna E, Falanga A, Nicoletti GF, Pedone C, Morelli G, Leone M, Galdiero M, Galdiero S
Department of Pharmacy, CIRPEB, and DFM, University of Naples Federico II, Naples, Italy Istituto di Biostrutture e Bioimmagini, CNR, Naples, Italy Center for Advanced Materials for Healthcare IIT@CRIB, Istituto Italiano di Tecnologia, Naples, Italy.
Department of Experimental Medicine, II University of Naples, Naples, Italy
Dipartimento Multidisciplinare di Specialità Medico-Chirurgiche e Odontoiatriche, II University of Naples, Naples, Italy
References: Not available.
Structural insights into and activity analysis of the antimicrobial peptide myxinidin
The marine environment has been poorly explored in terms of potential new molecules possessing antibacterial activity. Antimicrobial peptides (AMPs) offer a new potential class of pharmaceuticals; however, further optimization is needed if AMPs are to find broad use as antibiotics. We focused our studies on a peptide derived from the epidermal mucus of hagfish (Myxine glutinosa L.), which was previously characterized and showed high antimicrobial activity against human and fish pathogens. In the present work, the activities of myxinidin peptide analogues were analyzed with the aim of widening the original spectrum of action of myxinidin by suitable changes in the peptide primary structure. The analysis of key residues by alanine scanning allowed for the design of novel peptides with increased activity. We identified the amino acids that are of the utmost importance for the observed antimicrobial activities against a set of pathogens comprising both Gram-negative and Gram-positive bacteria. Overall, optimized bactericidal potency was achieved by adding a tryptophan residue at the N terminus and by the simultaneous substitution of residues present in positions 3, 4, and 11 with arginine. These results indicate that the myxinidin analogues emerge as an attractive alternative for treating drug-resistant infectious diseases and provide key insights into a rational design for novel agents against these pathogens. Copyright 2014, American Society for Microbiology. All Rights Reserved.
Structural insights into and activity analysis of the antimicrobial peptide myxinidin
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Aloj L, Aurilio M, Rinaldi V, D'Ambrosio L, Tesauro D, Peitl PK, Maina T, Mansi R, Von Guggenberg E, Joosten L, Sosabowski JK, Breeman WA, De Blois E, Koelewijn S, Melis M, Waser B, Beetschen K, Reubi JC, De Jong M * The EEE project(532 views) Proc Int Cosm Ray Conf Icrc Universidad Nacional Autonoma De Mexico, 2007; 5(HEPART2): 977-980. Impact Factor:0 ViewExport to BibTeXExport to EndNote