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Tamoxifen-model membrane interactions: An FT-IR study
Date
1997-06-01
Author
Boyar, H
Severcan, Feride
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The temperature- and concentration-induced effects of tamoxifen (TAM) on dipalmitoyl phosphatidylcholine (DPPC) model membranes were investigated by the Fourier transform-infrared (FT IR) spectroscopic technique. An investigation of the C-H stretching region and the C=0 mode reveals that the inclusion of TAM changes the physical properties of the DPPC multibilayers by (i) shifting the main phase transition to lower temperatures; (ii) broadening the transition profile slightly; (iii) disordering the system in the gel and in the liquid crystalline phases; (iv) increasing the dynamics in the gel phase and decreasing the dynamics of the acyl chains in the liquid crystalline phase; (v) increasing the mobility of the terminal methyl group region of the bilayer in the gel phase and decreasing it in the liquid crystalline phase; (vi) increasing the frequency of the C=0 stretching mode both in the gel and in the liquid crystalline phases, i.e. non-bonding with carbonyl groups. (C) 1997 Elsevier Science B.V.
Subject Keywords
Tamoxifen
,
DPPC
,
Phospholipid membrane
,
Model membrane
,
Membrane fluidity
,
FT-IR spectroscopy
URI
https://hdl.handle.net/11511/51820
Journal
JOURNAL OF MOLECULAR STRUCTURE
DOI
https://doi.org/10.1016/s0022-2860(96)09571-3
Collections
Department of Biology, Article