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On the basis of earlier reports suggesting that annexin A1 from Arabidopsis thaliana (AnnAt1) participates in limiting the excessive levels of reactive oxygen species during oxidative burst in plants, we examined the sensitivity of recombinant AnnAt1 to hydrogen peroxide and its peroxidase activity. Purified recombinant protein remains mostly a-helical and binds to lipids in a calcium-dependent manner. Upon oxidation recombinant AnnAt1 exhibits a tendency to form dimers in vitro. AnnAt1 is alsodoi:10.1016/j.bbrc.2005.08.181 pmid:16153598 fatcat:kxq63j6ovvgwver257oeha6ku4