Characterization of plant sulfiredoxin and role of sulphinic form of 2-Cys peroxiredoxin

  title={Characterization of plant sulfiredoxin and role of sulphinic form of 2-Cys peroxiredoxin},
  author={Iv{\'a}n Iglesias-Baena and Sergio Barranco-Medina and Alfonso L{\'a}zaro-Payo and Francisco Javier L{\'o}pez-Jaramillo and Francisca Sevilla and Juan-Jos{\'e} L{\'a}zaro},
  booktitle={Journal of experimental botany},
The antioxidant function of 2-Cys peroxiredoxin (Prx) involves the oxidation of its conserved peroxidatic cysteine to sulphenic acid that is recycled by a reductor agent. In conditions of oxidative stress, the peroxidatic cysteine can be overoxidized to sulphinic acid inactivating the Prx. An enzyme recently discovered, named sulfiredoxin (Srx), reduces the sulphinic 2-Cys Prx (Prx-SO(2)H). To explore the physiological functions of Srx in plants we have cloned, expressed and purified to… CONTINUE READING


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