Download MendeleyMicelle Bound Structure and Model Membrane Interaction Studies of the Peptide Hylin a1 from the Arboreal South American Frog Hypsiboas albopunctatus.
Alves, E.S., Junior, E.C., Cilli, E.M., Castro, M.S., Fontes, W., de Magalhaes, M.T., Liao, L.M., de Oliveira, A.L.(2015) Protein Pept Lett 22: 719-726
- PubMed: 26059694
- DOI: https://doi.org/10.2174/0929866522666150610092657
- Primary Citation of Related Structures:
2N0O - PubMed Abstract:
Antimicrobial peptides (AMPs) appear as a promising therapeutic candidate against multiresistant pathogens, because they are able to kill microorganisms and have low toxicity of resistance cells. Hylin a1 (Hy-a1, IFGAILPLALGALKNLIK-NH2) is a peptide extracted from the skin secretion of the frog Hypsiboas albopunctatus, which displays antimicrobial and hemolytic activities. We report here structural studies of Hy-a1 using different techniques such as fluorescence, CD and NMR. Our data showed that Hy-a1 acquires a well defined amphipathic α-helix when interacting with a membrane-like environment. Furthermore, Hy-a1 presented different affinity when compared to membranes of zwitterionic or anionic lipid composition. Finally, we proposed a molecular interaction model of this peptide with micelles.
Organizational Affiliation:
Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Caixa Postal 04478, Cep: 70910-000, Asa Norte, Brasília, DF, Brasil. aloliveira@unb.br.
