This model represents one out of two closely related ortholgous sets of proteins that, so far, are found only in the Archaea. This ortholog set includes MJ0106 from Methanococcus jannaschii and AF1251 from Archaeoglobus fulgidus, but not MJ1210 or AF0525. [Hypothetical proteins, Conserved]
Jiyao W et al.(2023). "The conserved domain database in 2023.",