While it's been known that the essential function of #selenium was its incorporation as #selenocysteine into #selenoproteins (e.g. the enzyme glutathione peroxidase) now, Ingold et al. reveal the precise role of #selenolatebased # Figure 1 from Comparing glutathione peroxidase and glutathione reductase activity and their associations with cardiovascular measures in Africans and Caucasians : the SABPA study Semantic Scholar Glutathione and the Cofactors Frontiers Research progress of glutathione peroxidase family (GPX) in redoxidation Glutathione peroxidase 1 and neuromodulation: Novel potentials of an old enzyme ScienceDirect Glutathione peroxidase 4: a new player in neurodegeneration? Molecular Psychiatry