Phospholipid and Protein Monolayers

概要

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We report on X-ray reflectivity and diffraction studies using monolayers of phospholipids and of the protein streptavidin specifically bound to monolayers. For phospholipids with the phosphocholine head group attached to the glycerol backbone via (flexible) ethylene oxide spacers, we demonstrate that the lateral interactions can be reduced by increasing of the spacer length. This is reflected in a reduction of the tilt angle of aliphatic tails. Diffraction of the protein layer can be observed in situ. The data reveal that positional order is merely short-ranged and that the structure can be changed reversibly via film compression and expansion.
社団法人応用物理学会の論文
1995-07-30