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The spin label ESR technique was used to monitor the hydration effect on the molecular dynamics of lipids at three depths of the alkyl chain in stratum corneum (SC) membrane. Increase in water content of neonatal rat SC leads to an increase in membrane fluidity, especially in the region near the membrane-water interface. The reorientational correlation time at the C-16 position of hydrocarbon chains...
Purpose: To study the interaction of Fe(III) and Mn(III) derivatives of meso-tetrakis(p-sulfonatophenyl)porphyrin (TPPS 4 ) with bovine serum albumin (BSA).Methods: T 1 relaxation of water, 1 H NMR of the porphyrin moieties, X-band ESR and optical spectroscopy.Results: At excess of BSA, both metalloporphyrins bind to BSA as the high spin monomers. The relaxivity of bound MnTPPS...
The localization of papaverine (PAV) in micelles of zwitterionic N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (HPS), cationic cetyltrimethylammonium chloride (CTAC), and anionic sodium dodecyl sulfate (SDS) in D 2 O was studied by 1 H NMR and ESR in the presence and absence of 5-doxyl- or 12-doxyl-stearic acid. PAV, surfactants, and spin probes are characterized by restricted...
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