Louis Luck

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19F NMR relaxation studies have been carried out on a fluorotryptophan-labeled E. coli periplasmic glucose/galactose receptor (GGR). The protein was derived from E. coli grown on a medium containing a 50:50 mixture of 5-fluorotryptophan and [2,4,6,7-2H4]-5-fluorotryptophan. As a result of the large gamma-isotope shift, the two labels give rise to separate(More)
The 13C multiplet structure of D--1-13C,1-2H-glucose complexed to the Escherichia coli periplasmic glucose/galactose receptor has been studied as a function of temperature. Asymmetric multiplet patterns observed are shown to arise from dynamic frequency shifts. Multiplet asymmetry contributions resulting from shift anisotropy-dipolar cross correlations were(More)
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