Interdigitated hydrocarbon chain packing causes the biphasic transition behavior in lipid/alcohol suspensions.

Interdigitated hydrocarbon chain packing causes the biphasic transition behavior in lipid/alcohol suspensions.
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叉指式烃链堆积导致脂质/醇悬浮液中的双相转变行为。

DOI:
10.1016/0005-2736(84)90562-5
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发表时间:
1984
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
McIntosh,TJ
McIntosh,TJ
中科院分区:
--
文献类型:
--
作者:
Simon,SA;McIntosh,TJ

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Rowe 最近证明 ((1983) Biochemistry 22, 3299–3305),乙醇对磷脂酰胆碱双层的转变温度 (Tm) 具有“双相”效应,降低低浓度的 Tmat,但增加高浓度的 Tmat。我们的 X 射线衍射数据表明,T 的这种逆转是诱导不寻常的凝胶相的结果,其中来自并列单层的脂烃链完全相互渗透或叉指。这种叉指相的特性也解释了Tm与乙醇浓度曲线中逆转的脂质链长度依赖性和高乙醇浓度下转变的窄宽度,以及来自含有其他药物(例如甲醇、苯甲醇、苯乙醇和氯丙嗪)的脂质悬浮液的光谱和量热数据。
It has been shown recently by Rowe ((1983) Biochemistry 22, 3299–3305) that ethanol has a ‘biphasic’ effect on the transition temperature (Tm) of phosphatidylcholine bilayers, reducingTmat low concentrations but increasingTmat high concentrations. Our X-ray diffraction data show that this reversal ofTmis a consequence of the induction of an unusual gel phase, where the lipid hydrocarbon chains from apposing monolayers fully interpenetrate or interdigitate. The properties of this interdigitated phase also explain the lipid chain length dependence of the reversal in theTmversus ethanol concentration curves and the narrow width of the transition at high ethanol concentrations, as well as spectroscopic and calorimetric data from lipid suspensions containing other drugs such as methanol, benzyl alcohol, phenyl ethanol, and chlorpromazine.
DOI: 10.1016/0021-9797(77)90288-0
发表时间: 1977
影响因子: 9.9
作者:
E. Evans;R. Waugh
通讯作者: R. Waugh
DOI: --
发表时间: 1979
影响因子: 3.4
作者:
L. Ebihara;J. Hall;R. Macdonald;T. McIntosh;S. Simon
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在完全水合的磷脂酰胆碱双层中诱导交错凝胶相
DOI: 10.1016/0005-2736(83)90403-0
发表时间: 1983
期刊: Biochimica et Biophysica Acta
影响因子: --
作者:
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通讯作者: S. Simon
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发表时间: 1977
期刊: Biochimica et biophysica acta
影响因子: --
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发表时间: 1978-01-01
期刊: BIOCHIMICA ET BIOPHYSICA ACTA
影响因子: --
作者:
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