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Article Dans Une Revue Letters in Peptide Science Année : 1995

Production, isolation and characterization of [Leu4]- and [Ile4]surfactins from Bacillus subtilis

Jean-Marc Bonmatin
Henri Labbé
  • Fonction : Auteur
Isabelle Grangemard
  • Fonction : Auteur
Françoise Peypoux
  • Fonction : Auteur
Régine Maget-Dana
  • Fonction : Auteur
Marius Ptak
  • Fonction : Auteur
Georges Michel
  • Fonction : Auteur
  • PersonId : 946873

Résumé

Bacillus subtilis coproduces several surfactin variants that are powerful biosurfactants and have potential applications in biology and industry. A single amino acid substitution in the heptapeptide moiety of surfactins strongly modifies their properties. To better establish structure-activity relationships and to search new variants with enhanced properties, Bacillus subtilis was grown into two modified culture media. Two new variants were isolated by chromatographic methods and studied by NMR spectroscopy. As planned, modifications consisted in the substitution of the l-valine residue at the fourth position by a more hydrophobic residue, i.e., leucine or isoleucine. These [Leu4]- and [Ile4]surfactins have a higher affinity for hydrophobic solvents and a twice improved surfactant power. Structure-property correlations were confirmed by analysis of the hydrophobic residue distribution in the three-dimensional model of the structure of surfactin in solution.

Dates et versions

hal-02082582 , version 1 (28-03-2019)

Identifiants

Citer

Jean-Marc Bonmatin, Henri Labbé, Isabelle Grangemard, Françoise Peypoux, Régine Maget-Dana, et al.. Production, isolation and characterization of [Leu4]- and [Ile4]surfactins from Bacillus subtilis. Letters in Peptide Science, 1995, 2 (1), pp.41-47. ⟨10.1007/BF00122922⟩. ⟨hal-02082582⟩
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