Orientational constraints as three-dimensional structural constraints from chemical shift anisotropy: The polypeptide backbone of gramicidin A in a lipid bilayer
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15 صفحه اولStructural fluctuations of a helical polypeptide traversing a lipid bilayer.
Time-resolved fluorescence anisotropy (FA) measurements are reported for five helical bilayer-spanning henicosapeptides, each containing one tryptophan at sequence position 1, 6, 11, 16, or 21. The FA decay reflects two molecular processes in all cases: local internal fluctuations of the tryptophan side chain with a relaxation time of 200-500 ps, and motions of the whole polypeptide molecule wi...
متن کاملHigh-resolution polypeptide structure in a lamellar phase lipid environment from solid state NMR derived orientational constraints.
BACKGROUND Solid-state nuclear magnetic resonance (NMR) spectroscopy provides novel structural constraints from uniformly aligned samples. These orientational constraints orient specific atomic sites with respect to the magnetic field direction and the unique molecular axis of alignment. Solid-state NMR is uniquely and ideally suited for providing such structural constraints on polypeptides and...
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chapter i provides an overview of structural linguistics and touches upon the saussurean dichotomies with the final goal of exploring their relevance to the stylistic studies of literature. to provide evidence for the singificance of the study, chapter ii deals with the controversial issue of linguistics and literature, and presents opposing views which, at the same time, have been central to t...
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ژورنال
عنوان ژورنال: Protein Science
سال: 1993
ISSN: 0961-8368
DOI: 10.1002/pro.5560020405