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- W2018364120 abstract "Up to now, the determination of the orientation of nano-scaled three-dimensional collapse structures formed at the air-water interface within a compressed Langmuir film was not possible by existing experimental techniques. This is however of special importance if pulmonary surfactant films are investigated, which form reversible surface-associated reservoirs or collapse structures at the air-water interface under dynamic lateral compression and expansion. This surfactant efficient mechanism of collapse has been proposed for a mechanically efficient functioning of the pulmonary surfactant lining, present at the air-alveolar interface. The direction of these reservoirs with respect to the interface, however, has remained dicey since decades. To address this question, we have designed a novel methodological approach to perform bidirectional surface imaging of the monomolecular membrane harboring nano-scale collapsed structures. This approach has been applied to investigate the collapsed structures formed in a functional analog of the pulmonary surfactant. Here, we prove that the surface-associated structures of the pulmonary surfactant film form towards the air-phase in contrast to the up to now commonly accepted view of an orientation towards the aqueous-phase.References:1. M. Amrein, A. V. Nahmen, M. Sieber (1997) Eur. Biophys. J. 26, 349.2. A. K. Sachan et al. (2012) ACS Nano 6, 1677.3. J. Perez-Gil (2008) Biochim. Biophys. Acta 1778, 1676." @default.
- W2018364120 created "2016-06-24" @default.
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- W2018364120 date "2013-01-01" @default.
- W2018364120 modified "2023-09-30" @default.
- W2018364120 title "Directionality of the Nano-Scale Reversible Collapsed Structures in the Pulmonary Surfactant Film" @default.
- W2018364120 doi "https://doi.org/10.1016/j.bpj.2012.11.1370" @default.
- W2018364120 hasPublicationYear "2013" @default.
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