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Oxidation proteomics: the role of thiol modifications
Identification of thiol modifications has gained significant importance. It is increasingly recognized that cysteines play an important role in protein function under both physiological and patho-physiological conditions. Here we reviewed different approaches that are used to identify oxidized proteins and discuss different fluorescent labeling techniques, differential two-dimensional gel electrophoresis and matrix-assisted laser desorption ionization - time of flight identification, in short MALDI-TOF. We illuminate processes that depend on protein oxidation of cysteines and we look into consequences of thiol oxidation during aging and in a variety of diseases, with a special reference to Alzheimer's disease. There is an urgent need for methods that detect specifically oxidized proteins and are able to distinguish different oxidation types.
Aging , cysteine , oxidation , thiol , DIGE , MALDI-TOF , Western blot , dye labeling , disease
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