[Study of tyrosine online fluorescence spectrum under high pressure].
Guang Pu Xue Yu Guang Pu Fen Xi
; 31(5): 1291-4, 2011 May.
Article
em Zh
| MEDLINE
| ID: mdl-21800585
ABSTRACT
The effect of pressure on fluorescence of tyrosine (Tyr) and Tyr in different concentration of Cu2+ was investigated. The results showed that Tyr fluorescence intensity was enhanced with increasing pressure in the absence of Cu2+, with the fluorescence intensity increasing by about 9% when the pressure reached 60 MPa. Furthermore, Tyr fluorescence quenched by Cu2+ and the quenching became stronger when the concentration of Cu2+ was higher. The effect of pressure on the fluorescence of Tyr was different under various Cu2+ concentrations. When Cu2+ concentration was lower, the fluorescence intensity increased relatively weakly (under 60 MPa and [Copper ion]/[Tyr] = 1, fluorescence intensity increased by 14.4%) and vice versa, the fluorescence intensity increased relatively strongly (under 60 MPa and [Copper ion]/[Tyr] = 40, fluorescence intensity increased by 38.4%).
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Base de dados:
MEDLINE
Assunto principal:
Espectrometria de Fluorescência
/
Tirosina
Idioma:
Zh
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
China