Rôle des ponts disulfure dans le repliement en épingle à cheveux de l’androctonine. Relations structure–activité

Abstract

Androctonin is a 25-residue antibacterial peptide extracted from the hemolymph of the scorpion Androctonus australis. In order to understand the structural requirements for hairpin fold and for interactions with the bacterial membrane, we have analysed the chemical shifts and the nOes of three synthetic androctonin mutants for which the disulfide bridges were selectively removed.