pH-induced conformational change of natural cyclic lipopeptide surfactin and the effect on protease activity.

  title={pH-induced conformational change of natural cyclic lipopeptide surfactin and the effect on protease activity.},
  author={Toshiaki Taira and Satohiro Yanagisawa and Takuto Nagano and Tadao Tsuji and Akira Endo and Tomohiro Imura},
  journal={Colloids and surfaces. B, Biointerfaces},
10 Citations
The Surfactin-Like Lipopeptides From Bacillus spp.: Natural Biodiversity and Synthetic Biology for a Broader Application Range
The last parts of the review summarized the numerous studies related to the production processes optimization as well as the approaches developed to increase the surfactin productivity of Bacillus cells taking into account the different steps of its biosynthesis from gene transcription to surfACTin degradation in the culture medium.
Self-Assembly of Surfactin into Nanofibers with Hydrophilic Channels in Nonpolar Organic Media.
Investigation of the self-assembly of surfactin (SFNa), a cyclic peptide amphiphile produced by Bacillus subtilis, in a nonpolar organic solvent, namely cyclohexane (CHx), showed that the SFNa nanofibers had a hydrophilic interior and formed water channels by water incorporation in this region.
Sustainable Surfactin Production by Bacillus subtilis Using Crude Glycerol from Different Wastes
In the present study, crude glycerol was evaluated as a potential low-cost carbon source to reduce the costs of surfactin production by Bacillus subtilis using stearin and soap wastes as carbon sources.
Rhamnolipids and surfactin inhibit the growth or formation of oral bacterial biofilm
Rhamnolipids inhibit oral bacterial growth and biofilm formation by A. actinomycetemcomitans Y4, and may serve as novel oral drug against localized invasive periodontitis.
Self-assembly, interfacial properties, interactions with macromolecules and molecular modelling and simulation of microbial bio-based amphiphiles (biosurfactants). A tutorial review
Amphiphiles obtained by microbial fermentation, known as biosurfactants or bioamphiphiles, are reviewed in terms of their solution experimental and theoretical self-assembly properties, interface
Biosurfactant as an Environmental Remediation Agent: Toxicity, Formulation, and Application in the Removal of Petroderivate in Sand and Rock Walls
The exploitation and transportation of petroleum products are important reasons for environmental concern since they are the major causes of accidents involving oil spills. Therefore, the


Interactions of surfactin with membrane models.
Interaction between the natural lipopeptide [Glu1, Asp5)] surfactin-C15 and hemoglobin in aqueous solution.
Far-UV circular dichroism results confirmed that surfactin can disrupt the helical structure of protein at high concentrations, although the enhanced native-like behavior of protein by low concentration of surfactIn was observed.
Ca(2+)-induced changes of surfactin conformation: a FTIR and circular dichroism study.
In trifluoroethanol, the FTIR spectra of surfactin and its diester are compatible with gamma and/or beta-turn(s) and the differences in their CD spectra show the importance of the Glu(1) and Asp(5) COOH groups in stabilizing the lipopeptide conformation.
Interactions of surfactin, a biosurfactant fromBacillus subtilis, with inorganic cations
The properties of surfactin, a biosurfactant lipopeptide, were highly modified in the presence of inorganic cations probably due to ion-surfactin associations which modify the surface-active properties.