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. Author manuscript; available in PMC: 2018 Feb 3.
Published in final edited form as: Biochem Biophys Res Commun. 2017 Feb 3;482(3):419–425. doi: 10.1016/j.bbrc.2016.10.086

Figure 4.

Figure 4

Catalytic reduction of lipid peroxides by GPX4. GPX4 (green) uses a highly nucleophilic selenocysteine to attack a lipid peroxide, generating a selenenic acid intermediate and a lipid hydroxide. The selenenic acid is further reduced by two successive equivalents of glutathione (GSH).