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Förster resonance energy transfer (FRET) studies usually involve observation of intensity or life-time changes in the donor or acceptor molecule and usually these donor and acceptor molecules differ (heterotransfer). The use of polarization to monitor FRET is far less common, although it was one of the first methods utilized. In 1960, Weber demonstrated that homotransfer between tryptophan molecules...
Human serum albumin (HSA) contains a single tryptophan residue at position 214. The emission properties of tryptophan 214 from recombinant albumins, namely, normal HSA, FDH-HSA and a methionine 218 HSA were examined. In all cases, the excited state lifetimes were best described by a two component model consisting mainly of a Lorentzian distribution. The centers of these distributions were 5.60 ns...
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