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  Characterization of complex gramicidin monolayers by light reflection and Fourier transform infrared spectroscopy.

Dhathathreyan, A., Baumann, U., Müller, B., & Möbius, D. (1988). Characterization of complex gramicidin monolayers by light reflection and Fourier transform infrared spectroscopy. Biochimica et Biophysica Acta (BBA) - Biomembranes, 944(2), 265-272. doi:10.1016/0005-2736(88)90440-3.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-42F6-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-42F8-9
Genre: Journal Article

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 Creators:
Dhathathreyan, A.1, Author              
Baumann, U.1, Author              
Müller, B., Author
Möbius, D.1, Author              
Affiliations:
1Research Group of Molecular Organized Systems, MPI for biophysical chemistry, Max Planck Society, ou_578548              

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Free keywords: Gramicidin A monolayer, Fourier transform infrared spectroscopy, Air/water interface
 Abstract: The reflectivities of monomolecular films of water-insoluble fatty alcohols and fatty acid methyl esters are measured at the air/water interface. A correlation between chain length and reflectivity of the monofilm is established which agrees with calculated values derived from a theoretical model. The correlation is used to estimate thickness of a monolecular film of gramicidin A. Fourier transform infrared (FTIR) spectroscopy is applied to transferred mixed layers of ion-channel-forming gramicidin A and dioctadecyldimethylammonium bromide in order to evaluate the structure of gramicidin. Transfer conditions for these monofilms are elaborated. Results of the reflection method and FTIR spectroscopy demonstrate that gramicidin exists as double-stranded β-helix inside the monolayer at a lateral pressure similar to that found in biomembranes.

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Language(s): eng - English
 Dates: 1988-10-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/0005-2736(88)90440-3
 Degree: -

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Title: Biochimica et Biophysica Acta (BBA) - Biomembranes
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 944 (2) Sequence Number: - Start / End Page: 265 - 272 Identifier: -