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首页> 外文期刊>Journal of Theoretical Biology >Why the wrinkling transition in partially polymerized membranes is not universal? Fractal-multifractal hierarchy
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Why the wrinkling transition in partially polymerized membranes is not universal? Fractal-multifractal hierarchy

机译:为什么部分聚合膜的起皱过渡并不普遍?分形-多重分形层次

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摘要

When partially polymerized membranes wrinkle they exhibit a passage from a conventional buckling (due to an instability caused by chiral symmetry breaking) at low polymerization to a local roughening (due to a frustration in the local packing of the chiral molecules composing the membrane) as a function of the polymerization of the lipids aliphatic tails. This transition was found to be non-universal and here we used neutron scattering to elucidate that this behavior is due to the onset of stretching in the membrane accompanied by a bilayer thickness variation. Close to the percolation limit this deformation is plastic similar to mutated lysozymes. We draw an analogy between this transition and echinocytes in red blood cells. (c) 2007 Elsevier Ltd. All rights reserved.
机译:当部分聚合的膜起皱时,它们表现出从低聚合时的常规屈曲(由于手性对称性断裂引起的不稳定性)到局部粗糙(由于构成膜的手性分子局部堆积而产生的挫败)的转变。脂族尾巴聚合的功能。发现这种转变是非普遍的,在这里我们使用中子散射来阐明这种行为是由于膜中开始拉伸并伴有双层厚度变化。接近渗滤极限,这种变形是塑性的,类似于突变的溶菌酶。我们在这种转变与红细胞中的棘突细胞之间进行类比。 (c)2007 Elsevier Ltd.保留所有权利。

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