Structure and mechanism of mammalian thioredoxin reductase: The active site is a redox active selenolthiol selenenylsulfide formed from the conserved cysteine selenocysteine sequence PNAS Figure 1 from The thioredoxin and glutathione dependent H2O2 consumption pathways in muscle mitochondria: Involvement in H2O2 metabolism and consequence to H2O2 efflux assays. Semantic Scholar From ubiquity to specificity: The diverse functions of bacterial thioredoxin systems Anjou 2024 Environmental Microbiology Wiley Online Library Thioredoxin Circulation Research