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Purificación de peroxirredoxinas de levaduras

Authors: Tendero Lucerón, María;

Purificación de peroxirredoxinas de levaduras

Abstract

Las peroxirredoxinas (Prxs) constituyen una familia de enzimas peroxidasas que adquieren el poder reductor del NADPH a través del sistema tiorredoxina. Estas enzimas se localizan distribuidas entre los organismos procariotas y eucariotas, y están presentes en altas concentraciones. Las Prxs intervienen el mismo primer paso, en su mecanismo catalítico, en el cual la cisteína del centro activo se oxida a ácido sulfénico por sustratos peróxidos tales como peróxido de hidrógeno, peroxinitrito, y una gran variedad de hidroperóxidos orgánicos El presente trabajo aborda mecanismos de purificación mediante diferentes cromatografías de peroxiredoxinas a partir de extractos de la levadura Saccharomyces cerevisiae, empleando para su detección su actividad peroxidasa dependiente de tiorredoxina.

Peroxiredoxins (Prxs) constitute a family of peroxidases enzymes that acquire the reducing power from NADPH through the thioredoxin system. These enzymes are localized distributed among prokaryotic and eukaryotic organisms, and are present in high concentrations. The Prxs are involved in the same first step in their catalytic mechanism, in which the active site cysteine is oxidized to sulfenic acid by peroxide substrates such as hydrogen peroxide, peroxynitrite, and a large variety of organic hydroperoxides. The work approaches the purification of peroxiredoxins from extracts of the yeast Saccharomyces cerevisiae by means of different chromatographies, using far its detection the thioredoxin-dependent peroxidase activity.

Keywords

Proteins, 2302.27, Proteinas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green