The Escherichia coli btuE gene, encodes a glutathione peroxidase that is induced under oxidative stress conditions

► BtuE is the first bacterial glutathione peroxidase characterized biochemically. ► BtuE is the first glutathione peroxidase described in Escherichia coli. ► BtuE uses GSH, TrxA or TrxC as reducinf agents in vitro. ► btuE transcription is induced under oxidative stress conditions.