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  • Title: [Interaction of spin-labeled saturated and unsaturated fatty acid derivatives with biological membrane lipid and protein components].
    Author: Ritov VB, Kagan VE, Maigkova GI, Moskvin MN, Komarov PG.
    Journal: Biofizika; 1976; 21(4):763-5. PubMed ID: 188490.
    Abstract:
    Interaction of saturated and unsaturated derivatives of spin-labelled fatty acids (2,2,6,6-tetramethyl-4-palmitoylpiperidil-l-oxyl (I) and synthetized by us 2,2,6,6-tetramethyl-4-oleoylpiperidil-1-oxyl (II) with sarcoplasmic reticulum membranes, retina rod outer segments and erythorocyte ghosts was studied. ESR spectra of the probe I are practically unresolved singlets, whereas ESR spectra of the probe II appear as more of less resolved triplet signals. The difference in ESR spectra of the probes I and II is the result of distribution of the probe I in pure lipid regions of membranes, the probe II being located both in lipid bilayer and hydrophobic areas of proteins.
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