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Updated: Mar 28, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
Published on: October 21, 2018
Study of visual pigment rhodopsin supramolecular organization in photoreceptor membrane by small-angle neutron
T B Feldman1,2,3, O I Ivankov4,5,6, T N Murugova4,5
1Moscow State University, Moscow, 119991, Russia. feldmantb@mail.ru.
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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