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GrdX family protein GrdX is a small protein, of unknown function, encoded in grd operons for selenocysteine-dependent glycine reductase systems. A small number of GrdX proteins appear to be encoded with a UGA-encoded selenocysteine residue appearing close to the N-terminus, at sites that do not align with Cys residues in other members of the family. This arrangement suggests that the ability to complete translation of GrdX selenoproteins may have regulatory value, in addition to whatever may be the molecular function of GrdX itself. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",