Hong F T, Mauzerall D, Mauro A
Proc Natl Acad Sci U S A. 1971 Jun;68(6):1283-5. doi: 10.1073/pnas.68.6.1283.
The reported orientation of retinal rods in a homogeneous magnetic field can be explained by the magnetic anisotropy of oriented molecules in the disc membranes of the rods. The energy of a single rod as a function of orientation in the magnetic field, the time required for alingment of the rod in a viscous medium, and the fluctuations of orientation are calculated. Arguments that rhodopsin is the constituent responsible for the effect are given. The possibility of orientation due to inhomogeneity of the magnetic field is ruled out. The application of magnetic anisotropy as an experimental tool in biology is indicated.
视网膜视杆细胞在均匀磁场中所报道的取向可以通过视杆细胞盘状膜中定向分子的磁各向异性来解释。计算了单个视杆细胞在磁场中的能量随取向的变化、视杆细胞在粘性介质中排列所需的时间以及取向的波动。给出了关于视紫红质是造成这种效应的成分的论据。排除了由于磁场不均匀性导致取向的可能性。指出了磁各向异性作为生物学实验工具的应用。
