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Titolo:
Mechanism of fluorescence quenching of tyrosine derivatives by amide group
Autore:
Wiczk, W; Rzeska, A; Lukomska, J; Stachowiak, K; Karolczak, J; Malicka, J; Lankiewicz, L;
Indirizzi:
Univ Gdansk, Fac Chem, PL-80952 Gdansk, Poland Univ Gdansk Gdansk PolandPL-80952 sk, Fac Chem, PL-80952 Gdansk, Poland Adam Mickiewicz Univ, Fac Phys, Quantum Elect Lab, PL-61614 Poznan, PolandAdam Mickiewicz Univ Poznan Poland PL-61614 Lab, PL-61614 Poznan, Poland
Titolo Testata:
CHEMICAL PHYSICS LETTERS
fascicolo: 1-2, volume: 341, anno: 2001,
pagine: 99 - 106
SICI:
0009-2614(20010615)341:1-2<99:MOFQOT>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOCHEMICAL ELECTRON-TRANSFER; CONFORMATIONAL DYNAMICS; TRYPTOPHAN; DEPENDENCE; PEPTIDES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Wiczk, W Univ Gdansk, Fac Chem, Sobieskiego 18, PL-80952 Gdansk, Poland Univ Gdansk Sobieskiego 18 Gdansk Poland PL-80952 Gdansk, Poland
Citazione:
W. Wiczk et al., "Mechanism of fluorescence quenching of tyrosine derivatives by amide group", CHEM P LETT, 341(1-2), 2001, pp. 99-106

Abstract

The difference between fluorescence lifetimes of the following amino acids: phenylalanine (Phe), tyrosine (Tyr), (O-methyl)tyrosine (Tyr(Me)), (3-hydroxy)tyrosine (Dopa), (3,4-dimethoxy)phenylalanine (Dopa(Me)(2)) and their amides was used to testify the mechanism of fluorescence quenching of aromatic amino acids by the amide group. On the basis of the Marcus theory of photoinduced electron transfer parabolic relationships between In k(ET) and ionization potentials reduced by energy of excitation (IP - E-0.0*) for the above-mentioned amino acids were obtained. This finding indicates the occurrence of photoinduced electron transfer from the excited chromophore group to the amide group. (C) 2001 Elsevier Science B.V, All rights reserved.

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Documento generato il 04/12/20 alle ore 16:42:06