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Ministerio de Ciencia e Innovación (Espanya)
Ministerio de EconomÃa y Competitividad (Espanya) |
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DÃaz i Cirac, Anna
Torné, Maria Badosa Romañó, Esther Montesinos SeguÃ, Emilio Salvador Sedano, Pedro Feliu Soley, LÃdia Planas i Grabuleda, Marta |
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2020 February 15 | |
A strategy for the design of antimicrobial cyclic peptides derived from the lead compounds c(KKLKKFKKLQ) (BPC194) and c(KLKKKFKKLQ) (BPC198) is reported. First, the secondary β-structure of BPC194 and BPC198 was analyzed by carrying out molecular dynamics (MD) simulations. Then, based on the sequence pattern and the β-structure of BPC194 or BPC198, fifteen analogues were designed and synthesized on solid-phase. The best peptides (BPC490, BPC918, and BPC924) showed minimum inhibitory concentration (MIC) values <6.2 μM against Pseudomonas syringae pv. syringae and Xanthomonas axonopodis pv. vesicatoria, and an MIC value of 12.5 to 25 μM against Erwinia amylovora, being as active as BPC194 and BPC198. Interestingly, these three analogues followed the structural pattern defined from the MD simulations of the parent peptides. Thus, BPC490 maintained the parallel alignment of the hydrophilic pairs K1–K8, K2–K7, and K4–K5, whereas BPC918 and BPC924 included the two hydrophilic interactions K3–Q10 and K5–K8. In short, MD simulations have proved to be very useful for ascertaining the structural features of cyclic peptides that are crucial for their biological activity. Such approaches could be further employed for the development of new antibacterial cyclic peptides This work was supported by the Ministerio de EconomÃa y Competitividad (MINECO) [grant numbers AGL2009-13255-C02-02/AGR, AGL2012-39880-C02-02 and AGL2015-69876-C2-2-R]. |
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http://hdl.handle.net/2072/372792 | |
eng | |
MDPI (Multidisciplinary Digital Publishing Institute) | |
Attribution 4.0 Spain | |
http://creativecommons.org/licenses/by/4.0/es/ | |
Antibiòtics pèptids
Peptide antibiotics Dinà mica molecular Molecular dynamics Relacions planta-microorganisme patogen Plant-pathogen relationship |
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Rational Design of Cyclic Antimicrobial Peptides Based on BPC194 and BPC198 | |
info:eu-repo/semantics/article | |
Recercat |