Details

Autor(en) / Beteiligte

• Grigoriev, Pavel A.
• Schlegel, Brigitte
• Kronen, Matthias
• Berg, Albrecht
• Härtl, Albert
• Gräfe, Udo

Titel

Differences in membrane pore formation by peptaibols

Ist Teil von

• Journal of peptide science, 2003-11, Vol.9 (11-12), p.763-768

Ort / Verlag

Chichester, UK: John Wiley & Sons, Ltd

Erscheinungsjahr

2003

Quelle

Wiley Blackwell Single Titles

Beschreibungen/Notizen

• The efficiencies of membrane pore formation by 14 naturally occurring peptaibols and two structurally modified ampullosporins were compared using an artificial bilayer membrane model. Major differences were found in the dependence on peptide sequences and the constituting amino acids. Alamethicin F‐30, chrysospermins C/D, paracelsin and texenomycin A displayed higher activity by several orders of magnitude in comparison with smaller peptaibols containing <17 amino acids such as ampullosporins, trichofumins, bergofungins and cephaibols. Biological activities such as the induction of pigment formation by the fungus Phoma destructiva and long acting hypothermia and depression of locomotor activity in mice were correlated with moderate membrane permeabilization. No or weak membrane activities corresponded with biological inactivity. Highly membrane‐active structures such as alamethicin F‐30, chrysospermin C, texenomycin A and paracelsin A displayed antibiotic effects against the fungus and toxicity in mice. Copyright © 2003 European Peptide Society and John Wiley & Sons, Ltd.