Boroske E, Helfrich W
Biophys J. 1978 Dec;24(3):863-8. doi: 10.1016/S0006-3495(78)85425-3.
Magnetic realignment and rotational diffusion of cylindrical egg lecithin vesicles were measured under a phase contrast microscope. The anisotropy of magnetic susceptibility times membrane thickness was calculated from the data for several thin-walled vesicles. The resulting values were assigned to discrete numbers of bilayers. The difference between the susceptibilities parallel and perpendicular to the long axes of the lecithin molecules is deduced to be X parallel - X perpendicular = -(0.28 +/- 0.02) . 10(-8) cgs at 23 degrees C, if a bilayer thickness of 60 A is assumed.
在相差显微镜下测量了圆柱形卵磷脂囊泡的磁重排和旋转扩散。根据几个薄壁囊泡的数据计算了磁化率与膜厚度的乘积的各向异性。将所得值赋予离散的双层数。如果假设双层厚度为60埃，则在23℃下，平行于和垂直于卵磷脂分子长轴的磁化率之差推导为X平行 - X垂直 = -(0.28 ± 0.02)·10⁻⁸ 厘米克秒制单位。
