Sliding columnar phase of DNA lipid complexes
Sliding columnar phase of DNA lipid complexes
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DOI：
10.1103/physrevlett.80.4345
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发表时间：
1998-05-11
影响因子：
8.6
通讯作者：
Lubensky, TC
中科院分区：
文献类型：
--
作者：
O'Hern, CS;Lubensky, TC
我们介绍了一个简单的模型，DNA-阳离子-脂质复合物中，画廊之间的平面双层脂质层包含DNA的二维近晶晶格，耦合取向和位置的晶格在相邻的画廊。我们确定了一个新的平衡相，其中有长程取向，但没有DNA晶格之间的位置相关性。我们讨论了这种新相的性质，如它的X射线结构因子S（r），它表现出不寻常的exp（-const X ln（2）/r/）行为作为面内间距r的函数。
We introduce a simple model for DNA-cationic-lipid complexes in which galleries between planar bilayer lipid lamellae contain DNA 2D smectic lattices that couple orientationally and positionally to lattices in neighboring galleries. We identify a new equilibrium phase in which there are long-range orientational but not positional correlations between DNA lattices. We discuss properties of this new phase such as its x-ray structure factor S(r), which exhibits unusual exp(-const X ln(2)/r/) behavior as a function of in-plane separation r.