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Study of visual pigment rhodopsin supramolecular organization in photoreceptor membrane by small-angle neutron scattering method with contrast variation |
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| Authors: | T. B. Feldman O. I. Ivankov T. N. Murugova A. I. Kuklin P. V. Shelyakin M. A. Yakovleva V. I. Gordeliy A. V. Belushkin M. A. Ostrovsky |
| Affiliation: | 1. Moscow State University, Moscow, 119991, Russia 2. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119334, Russia 3. Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, Russia 4. Moscow Institute of Physics and Technology, State University, Institutskii per. 9, Dolgoprudnyi, Moscow oblast, 141700, Russia 5. Taras Shevchenko National University of Kyiv, Kyiv, Ukraine 6. Institut de Biologie Structurale, Grenoble, France 7. Research Center Jülich, Jülich, Germany |
| Abstract: | Supramolecular organization of rhodopsin in the photoreceptor membrane was investigated by small-angle neutron scattering method. The experiments, which were performed with mixtures of heavy/light water as solvent (contrast variation method), were aimed at obtaining information about the lipid and protein components of the photoreceptor disc membrane separately. It was shown that the packaging density of the rhodopsin molecules in the photoreceptor membrane was unusually high: the distance between the centers of the molecules was approximately 56 Å. The probability of the monomeric state of rhodopsin molecules in the photoreceptor membrane, according to the data obtained, is rather high. |
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