The Sensitive Balance between the Fully Folded and Locally Unfolded Conformations of a Model Peroxiredoxin

To reduce peroxides, peroxiredoxins (Prxs) require a key “peroxidatic” Cys that, in a substrate-ready fully folded (FF) conformation, is oxidized to sulfenic acid and then, after a local unfolding (LU) of the active site, forms a disulfide bond with a second “resolving” Cys. For Salmonella typhimuri...

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