Glycine reductase is a complex with two selenoprotein subunits, A and B. This model represents the glycine reductase selenoprotein B. Closely related to it, but excluded from this model, are selenoprotein B subunits of betaine reductase and sarcosine reductase. All contain selenocysteine incorporated during translation at a specific UGA codon.
Jiyao W et al.(2023). "The conserved domain database in 2023.",