AMCA to TAMRA long range resonance energy transfer on a flexible peptide

A. Synak, R. Fudala, I. Gryczynski, L. Kułak, S. Shah, I. E. Serdiuk, B. Grobelna, P. Arłukowicz, A. Kubicki, P. Bojarski

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Abstract

Förster resonance energy transfer between 7-amino-4-methyl-3-coumarinylacetic acid, (AMCA, donor) and 5-carboxytetramethylrhodamine, (TAMRA, acceptor) bound to Lys(AMCA)-Gly-Pro-Arg-Ser-Leu-Ser-Gly-Lys(TAMRA)-NH2 peptide is demonstrated by various spectroscopic techniques in glycerol at room temperature. In particular, nonexponential character of fluorescence intensity decay evidences the distance distribution between the donor and acceptor sites resulting from the flexibility of the peptide. Numerical analysis of the fluorescence decay yields the distance distribution parameters. The results obtained are consistent with those obtained from steady-state fluorescence indicating that energy transfer is more efficient than suggested by the relation between the critical distance and donor-acceptor distance for elongated peptide conformation.

Original languageEnglish
Pages (from-to)60-64
Number of pages5
JournalDyes and Pigments
Volume158
DOIs
StatePublished - Nov 2018

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    Synak, A., Fudala, R., Gryczynski, I., Kułak, L., Shah, S., Serdiuk, I. E., Grobelna, B., Arłukowicz, P., Kubicki, A., & Bojarski, P. (2018). AMCA to TAMRA long range resonance energy transfer on a flexible peptide. Dyes and Pigments, 158, 60-64. https://doi.org/10.1016/j.dyepig.2018.05.019