INTRAMOLECULAR DONOR‐ACCEPTOR SEPARATIONS IN METHIONINE‐ AND LEUCINE‐ENKEPHALIN ESTIMATED BY LONG‐RANGE RADIATIONLESS TRANSFER OF SINGLET EXCITATION ENERGY

M. Kupryszewska, I. Gryczyński, A. Kawski

Research output: Contribution to journalArticle

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Abstract

The Förster theory of radiationless electronic excitation energy transfer was used to determine the intramolecular separation between the tyrosine and phenylalanine residues in leucine‐ and methionine‐enkephalin. The spectral overlap integrals and the Förster critical distances were evaluated. Transfer efficiencies were determined by observing sensitized fluorescence of the acceptor and quenching of the donor fluorescence. The results were compared with theoretical estimations, better agreement being obtained with the first method.

Original languageEnglish
Pages (from-to)499-502
Number of pages4
JournalPhotochemistry and Photobiology
Volume36
Issue number5
DOIs
StatePublished - Nov 1982

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