Interactions of a cationic surfactant - (benzyloxymethyl) dodecyldimethylammonium chloride with model biomembrane systems

被引：2

作者：

Wypych, Aleksandra ^{[1
,2
]}

Szpotkowski, Kamil ^{[1
]}

Jurga, Stefan ^{[1
,4
]}

Domka, Ludwik ^{[3
]}

Kozak, Maciej ^{[1
]}

机构：

[1] Adam Mickiewicz Univ, Fac Phys, Dept Macromol Phys, PL-61614 Poznan, Poland

[2] Lodz Univ Technol, Dept Mol Phys, PL-90924 Lodz, Poland

[3] Adam Mickiewicz Univ, Fac Chem, Dept Metalorgan Chem, PL-60780 Poznan, Poland

[4] Adam Mickiewicz Univ, Fac Phys, NanoBioMed Ctr, PL-61614 Poznan, Poland

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2013年 / 108卷

关键词：

Cationic surfactant; Phospholipids; Synchrotron radiation; Dielectric spectroscopy; FTIR spectroscopy; SMALL-ANGLE SCATTERING; X-RAY-DIFFRACTION; DIELECTRIC MEASUREMENTS; UNILAMELLAR VESICLES; HEADGROUP MOBILITY; HIGH-PRESSURE; PHASE; TEMPERATURE; DMPC; WATER;

D O I：

10.1016/j.colsurfb.2013.03.010

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Phospholipids are the main components of biological membranes. The aim of the present study was to determine the influence of a cationic surfactant on phospholipid structure and dynamics. Fourier transform infrared (FTIR) and dielectric relaxation (DRS) spectroscopies as well as small-angle Xray scattering (SAXS) with synchrotron radiation have been used to analyse the structure of fully hydrated 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) in the presence of a quaternary ammonium surfactant: (benzyloxymethyl) dodecyldimethylammoniumchloride (BzMDDAC). The presence of the surfactant caused changes in the temperature of the DMPC phase transition, as revealed using FTIR and DRS measurements. This change results from the disappearance of the multilamellar phase of DMPC and the formation of the unilamellar (most likely bicellar) phase, as indicated by the SAXS results. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：212 / 218

页数：7

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