Wyniki wyszukiwania dla: Alberta Ferrarini
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Biomembranes, which are made of a lipid bilayer matrix where proteins are embedded or attached, constitute a physical barrier for cell and its internal organelles. With regard to the distribution of their molecular components, biomembranes are both laterally heterogeneous and transversally asymmetric, and because of this they are sites of vital biochemical activities. Lipids may translocate from one...
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Chemistry – A European Journal > 18 > 1 > 2 - 2
Natural abundance deuterium 2D‐NMR (NAD 2D‐NMR) experiments in oriented solutions of polypeptides have been used to successfully resolve almost all inequivalent deuterium sites of long‐chain saturated fatty acid methyl esters, a crucial step for establishing their natural isotopic profile. Theoretical prediction of quadrupolar splittings confirms the spectral assignments and demonstrates the key role...
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Chemistry – A European Journal > 18 > 1 > 117 - 126
The overall and detailed elucidation (including the stereochemical aspects) of enzymatic mechanisms requires the access to all reliable information related to the natural isotopic fractionation of both precursors and products. Natural abundance deuterium (NAD) 2D‐NMR experiments in polypeptide liquid‐crystalline solutions are a new, suitable tool for analyzing site‐specific deuterium isotopic distribution...
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The conversion into 6,7‐dihydro‐5H‐dibenz[c,e]azepine (DAZ) N‐protected amides is a viable route for the determination of the absolute configuration of chiral 2‐substituted carboxylic acids. The biphenyl moiety of DAZ, besides being a probe of chirality for the electronic circular dichroism (ECD) spectroscopy, makes these systems suitable for configuration assignment by exploiting the chirality amplification...
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Theoretical Chemistry Accounts > 2007 > 117 > 5-6 > 1017-1027
Time decay of the fluorescence anisotropy ratio due to diffusion of dyes in micelles is usually interpreted by decoupling the reorientational dynamics of the molecule with respect to the local director from the translational diffusion of the dye. However, while such a kind of assumption is justified in other contexts (like for reorientations of a small mobile fragment in a macromolecule, decoupled...
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