Peroxiredoxins (Prx) are a family of nonselenium peroxidases that are involved in cell defense against oxidative stress and in redox regulation of intracellular signaling. Mammalian peroxiredoxin 6 (Prx6) belongs to the 1-Cys Prx subfamily. The protein-protein interactions of human Prx6 were studied using a yeast two-hybrid system. Hybrid plasmid pHybLex/Zeo/Prx6, which directed synthesis of a chimeric protein consisting of the DNA-binding domain (BD) of LexA and a Prx6 sequence, was used to screen a two-hybrid cDNA library Hybrid Hunter (Invitrogen). The screening identified two potential interaction partners of Prx6: the calcium-activated cysteine endopeptidase calpain and the p50RhoGAP protein of the family of Sec14-like proteins. The possibility for the interactions observed in the two-hybrid system to occur in oxidative stress in vivo is discussed.
Russian Journal of Genetics – Springer Journals
Published: Mar 25, 2011
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