학술논문

Oxidação de proteínas por oxigênio singlete: mecanismos de dano, estratégias para detecção e implicações biológicas Singlet oxygen-mediated protein oxidation: damage mechanisms, detection techniques and biological implication
Document Type
article
Source
Química Nova, Vol 29, Iss 3, Pp 563-568 (2006)
Subject
singlet oxygen
protein oxidation
protein peroxide
Chemistry
QD1-999
Language
English
Spanish; Castilian
Portuguese
ISSN
0100-4042
1678-7064
Abstract
Proteins are potential targets for singlet molecular oxygen (¹O2) oxidation. Damages occur only at tryptophan, tyrosine, histidine, methionine, and cysteine residues at physiological pH, generating oxidized compounds such as hydroperoxides. Therefore, it is important to understand the mechanisms by which ¹O2, hydroperoxides and other oxidized products can trigger further damage. The improvement and development of new tools, such as clean sources of ¹O2 and isotopic labeling approaches in association with HPLC/mass spectrometry detection will allow one to elucidate mechanistic features involving ¹O2-mediated protein oxidation.