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・ Lipińskie Małe
・ Lipińskie, Giżycko County
・ Lipińskie, Masovian Voivodeship
・ Lipińskie, Pisz County
・ Lipińskie, Podlaskie Voivodeship
・ Lipița culture
・ Lipid emulsion
・ Lipid hypothesis
・ Lipid II
・ Lipid IVA 3-deoxy-D-manno-octulosonic acid transferase
・ Lipid IVA 4-amino-4-deoxy-L-arabinosyltransferase
・ Lipid metabolism
・ Lipid microdomain
・ Lipid peroxidation
・ Lipid pneumonia
Lipid polymorphism
・ Lipid profile
・ Lipid raft
・ Lipid signaling
・ Lipid storage disorder
・ Lipid therapy
・ Lipid-A-disaccharide synthase
・ Lipid-anchored protein
・ Lipid-binding serum glycoprotein
・ Lipid-phosphate phosphatase
・ Lipidleggin'
・ Lipidology
・ Lipidome
・ Lipidomics
・ Lipiduria


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Lipid polymorphism : ウィキペディア英語版
Lipid polymorphism

Polymorphism in biophysics is the ability of lipids to aggregate in a variety of ways, giving rise to structures of different shapes, known as "phases". This can be in the form of spheres of lipid molecules (micelles), pairs of layers that face one another (lamellar phase, observed in biological system as a lipid bilayer), a tubular arrangement (hexagonal), or various cubic phases (Fd3m, Im3m, Ia3m, Pn3m, and Pm3m being those discovered so far). More complicated aggregations have also been observed, such as rhombohedral, tetragonal and orthorhombic phases.
It forms an important part of current academic research in the fields of membrane biophysics (polymorphism), biochemistry (biological impact) and organic chemistry (synthesis).
Determination of the topology of a lipid system is possible by a number of methods, the most reliable of which is x-ray diffraction. This uses a beam of x-rays that are scattered by the sample, giving a diffraction pattern as a set of rings. The ratio of the distances of these rings from the central point indicates which phase(s) are present.
The structural phase of the aggregation is influenced by the ratio of lipids present, temperature, hydration, pressure and ionic strength (and type).
==Hexagonal phases in the lipid polymorphism==
(詳細はウィキペディア(Wikipedia)

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